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Putco HD Wiring Harness and Relay, H4

4.2 4.2 out of 5 stars 252 ratings
$46.89
H4
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Purchase options and add-ons

  • Heavy-duty wiring harness and plugs. The connection plug is made of hard insulated plastic.
  • 16 Gauge wiring. Headlight / Fog light (Bulb type specific harnesses).
  • Designed to heat proof temperatures more than 480 degrees Fahrenheit for added protection when used with high-wattage bulbs.
  • Easy to replace original connected plugs.
  • Made with the highest grade material. 1 Year Warranty.

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Item model number ‏ : ‎ 230004HW
  • Department ‏ : ‎ unisex-adult
  • Date First Available ‏ : ‎ January 5, 2009
  • Manufacturer ‏ : ‎ Putco
  • ASIN ‏ : ‎ B001P29X4G
  • Customer Reviews:
    4.2 4.2 out of 5 stars 252 ratings

Product Description

Putco Wiring Harnesses and Relays are everything you need to update your vehicles lighting. Made from hard, insulated plastic for durability, these harnesses are designed to heat proof temperatures more then 480 degrees Fahrenheit for added protection with high wattage bulbs.

What's in the box

  • Light Accessories and Wiring

    • Looking for specific info?

    Customer reviews

    4.2 out of 5 stars
    4.2 out of 5
    252 global ratings

    Customers say

    Customers like the ease of installation of the auto accessory. They mention that it's able to plug and play. They also like the value, and brightness. However, some customers have reported issues with the relays and wiring. They say the relay is cheap and the wire gauge is too small to be a long lasting. Customers also have issues with bulbs. They differ on fit, wiring, and quality.

    AI-generated from the text of customer reviews

    69 customers mention64 positive5 negative

    Customers find the installation of the auto accessory fairly easy. They say the connection is simple and the installation went quickly. Some mention that there is a good tutorial on Jeep forums.

    "This wiring harness is absolutely plug and play. So easy, and so bright compared to before the harness... like having high beams but aimed as low..." Read more

    "...And it is quick to install. I installed it in probably 20 minutes...." Read more

    "...That said, installation is easy and took about an hour on my 1993 Jeep Cherokee and everything worked (mostly*) with the Hella H4 conversion..." Read more

    "...The instructions are easy to follow and practically fool-proof...." Read more

    50 customers mention36 positive14 negative

    Customers like the brightness of the wiring kit. They say it makes their headlights much brighter than stock, and gives the lights the full amount of power that they should have. Some say that the wiring harness went well with the light install project.

    "This wiring harness is absolutely plug and play. So easy, and so bright compared to before the harness... like having high beams but aimed as low..." Read more

    "...This gives the lights the full amount of power that they should have...not any extra power...." Read more

    "...One of mine was wonky and made the brights cut out periodically...." Read more

    "...I highly recommend this setup for a great lighting improvement at a very affordable cost...." Read more

    39 customers mention39 positive0 negative

    Customers appreciate the value of the auto accessory. They say it's worth the money, a nice cheap upgrade, and a good product.

    "...There was a definite difference in brightness. It's definitely worth the money...." Read more

    "...The improvement is incredible. A great bang-for-the-buck mod, and still DOT approved/street legal...." Read more

    "...This is a great harness for the money. This time I properly waterproofed everything with some liquid electrical tape. It should last much longer." Read more

    "...it's great for the price." Read more

    93 customers mention61 positive32 negative

    Customers have mixed opinions about the quality of the auto accessory. Some mention that it works great and doesn't have any issues with cutting out, while others say that it's really horrible quality, the connectors and relays are flimsy, and will eventually fail.

    "...3 MONTH FOLLOW-UP:After three months the harness is still working perfectly...." Read more

    "...It was very straightforward.The improvement is incredible. A great bang-for-the-buck mod, and still DOT approved/street legal...." Read more

    "...The typical Bosch 5 pin relay won't work. If you are not electrically inclined don't worry as it is pretty straightforward...." Read more

    "Works great for an upgrade to the stock Jeep Cherokee (XJ) headlight wiring. This is a direct plug-n-play upgrade...." Read more

    17 customers mention10 positive7 negative

    Customers are mixed about the fit of the auto accessory. Some mention that it fits perfect, the loom was easy to fit and ties down, and the wires were perfect length. However, others say that the 16awg wire is undersized for the advertised support of 100w headlamps and will short out.

    "...The loom was easy to fit and ties down and the relays had enough wire to attach to the supplied bracket on the fender next to the battery...." Read more

    "The product works as advertised. Well put together, sufficient gauge wire, Plenty of slack to hide behind my grille...." Read more

    "...The 16awg wire is undersized for the advertised support of 100w headlamps and will eventually fail...." Read more

    "Harness installed easily and wires were perfect length. Relays that come with it are horrible...." Read more

    12 customers mention6 positive6 negative

    Customers have mixed opinions about the wiring of the auto accessory. Some mention that the wiring is ok, while others say that it's poorly wired and not sufficient for today's high wattage bulbs. The covering feels cheap and the wire at the connectors is exposed.

    "...The wiring is ok, but I would have made it with better wire protection if I had the time to build one, as the yellow covering feels cheap and the..." Read more

    "...I considered the quality and determined that this harness shouldn't be trusted as-is...." Read more

    "...These problems never existed before. All connections are clean but the 3-prong adapter that plug between headlamps and factory wiring have always..." Read more

    "...figured out that it wasn't the cheaply made switch so much as poor wiring...." Read more

    10 customers mention0 positive10 negative

    Customers are dissatisfied with the relay that comes with the auto accessory. They say it's cheap and the wire gauge is too small to be long-lasting. Some customers also mention that the relays refuse to engage without a little wiggling encouragement.

    "...Sometimes the relays refuse to engage without a little wiggling encouragement, and sometimes they fail to disengage when the weather dips below 40..." Read more

    "...relay failure would not warrant a 1 star rating, however the relays are not as generic as one would hope and the local parts store does not carry..." Read more

    "...The relays seem hit or miss (hence the 4 stars)...." Read more

    "...the wiring is great but the relays are complete junk. one has ready failed after maybe a hour of total use. if imagine the other will as well soon...." Read more

    9 customers mention1 positive8 negative

    Customers are dissatisfied with the bulbs. They mention that no fuses are provided and that additional wiring is required to install them safely.

    "...4. Finally, and most absurdly, there are no fuses nor anywhere in the harness to add them easily...." Read more

    "...Most of the connectors are cheap quality. No fuses are provided, so they need to be soldered in...." Read more

    "...The only complaint I have is that it doesn't come with fuses for the power cables...." Read more

    "...Does not come with a fuse or porcelain plugs, although the plastic ones are reasonably beefy and seem to be doing OK using off-road bulbs so far...." Read more

    They will corrode and burn out on you. And yes I used dielectric grease... a lot of it
    1 Star
    They will corrode and burn out on you. And yes I used dielectric grease... a lot of it
    I bought this because I did a little research and it seemed like putco was a decent wiring harness upgrade. I should of kept doing research. I got this for my 99 cherokee because the factory wires are almost 2 decades old and they sucked anyways from the factory. They did awesome at first made a huge difference brightness wise. Then about a month later I just happen to look out the window and I see my headlights are on so I thought I had left the headlights on for the past 3 hours but when I got out the high beam light was on and the headlight switch was off. I pop the hood and look at the relays and the high beam relay looked disgusting. It was extremely corroded and looked like it overheated which it says in the description it’s heat resistant up to 480 degrees. . I didn’t have the wired tucked away where there was no ventilation it was next to my battery and had plenty of air flow but it was where water couldn’t get in and soak it. So I pull the relay and the lights go out(picture of relay attached to review). So now I’m stuck with just low beams. So I leave the next morning and my high beam indicator is slightly illuminated. Probably a short somewhere in the cheese wiring and harness. Might I add in that these are rated for up to 100 watt bulbs and I had cheap 45w/65w bulbs in. And of course this all happens after the deadline for any warranty or returns. I Defiantly would not recommend this. I ended getting a way better harness for half the price at k suspension.
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    Top reviews from the United States

    Oceanic815
    5.0 out of 5 stars Plug and Play... It cannot be easier
    Reviewed in the United States on March 7, 2013
    Size: H4Verified Purchase
    This wiring harness is absolutely plug and play. So easy, and so bright compared to before the harness... like having high beams but aimed as low beams. High beams could illuminate satellites with the right headlights or bulbs (example: Hella H4 housings and Osram Nightbreaker H4 bulbs). I wish I would have done this upgrade a long, long time ago.

    Instructions to install for a Jeep Cherokee XJ or Comanche MJ:

    -Remove grille, headlight bezels, and headlamp bulbs. Disconnect battery - and + terminals.
    -Feed harnesses from the passenger side starting between the battery and the back of the headlamp housing,over to the driver side.
    -Connect relays to new harness.
    -Plug the driver side bulb into the new harness.
    -Attach the new harness's ground wire under one of the small bolts on the radiator support after scraping the paint off under it to ensure a good connection.
    -Attach the harness to the existing harness conduit behind the grille working toward the passenger side.
    -Plug the new harness plug into passenger headlamp. Note the original driver side headlight plug will be free and not used; cover with electrical tape.
    -Attach the ground for the passenger side just like you did the driver side under a radiator support bolt.
    -Attach relays with provided bracket on the passenger side inner fender in a fashion where water will not get in to them.
    -Connect power wires to positive battery terminal.
    -Reconnect + and - terminals to battery.

    The install takes approximately 30 minutes.

    3 MONTH FOLLOW-UP:

    After three months the harness is still working perfectly. No blown fuses, no blown relays, no blown bulbs, no letting the smoke out of the wires.

    Please take note: when preparing your grounds, remove all paint/dirt from the body where you intend to attach the ground wire... a screwdriver and/or a little work with some 60 grit sandpaper will do the trick. Dielectric grease is also suggested to maintain long term continuity and fight corrosion/rust.
    4 people found this helpful
    Helpful
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    joe8388
    4.0 out of 5 stars Decent upgrade
    Reviewed in the United States on January 9, 2017
    Size: H4Verified Purchase
    I installed on a 1998 Jeep Cherokee Sport. So, reading previous reviews, I was hesitant about this kit but went for it as it can easily be modified to work. Everything seemed to be put together well. I replaced the cheapo relays with BWD relays part #R4136P. This is listed as a fan motor relay but will work. The typical Bosch 5 pin relay won't work. If you are not electrically inclined don't worry as it is pretty straightforward. The translated instructions on the package are not good but you can get an idea just by looking at the simple diagram they give you. A lot of people were complaining about the bright yellow harness. This is also solved with putting inside some split loom and running along a factory harness. This is a cheap harness made in Taiwan. Don't purchase this and expect Ferrari grade parts. You get what you pay for. I already knew I would need to modify, but purchasing this saved me time putting my own together. Note: This will work for a pair of headlights with a relay for low and high beam (high beam up to 100W). If you have four headlights, i.e. two on each side, you will have to order a separate kit. If anyone is unfamiliar with how this works it takes the power away from the factory headlight switch and sends it through the relays, and at the same time delivers full power generated from the alternator to the headlights. If you install higher wattage headlights they will be dim and will melt factory wires and the headlight switch as the standard equipment on these vehicles are junk, and the engineers never thought that people would actually want to be able to see at night. Also, people were saying about the relays rusting out. You need to put the relays in an upright position in a location where they cannot get wet. This is standard. If you can't keep them 100% in a dry location, you need to seal them and it will save you headache.

    If being used on a 97+ Jeep Cherokee with factory fog lights, you will run into an issue where once you turn your high beams on, and then off again, your high and low beams are stuck on causing 115W running through. There are several ways and one correct way to solve this. I personally just removed the fog light relay since my fog lights are no longer on my Jeep anyway and this solved the issue.

    Oh yeah, so the right way to do it... Cut the 20g Red Fog Lamp Relay #1 ground/trigger wire at the back of the driver's side headlight plug. Extend this wire using your preferred method so that it is long enough to reach your new aftermarket high beam relay. Splice it into the 87 pin (output) of your new high beam relay. If you have two 87's (which is ideal), either one is OK. Do not however use 87a if your relay has it!
    16 people found this helpful
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    Scott C Jones
    5.0 out of 5 stars Worth the money. Not a game changer, but not intended to be.
    Reviewed in the United States on August 4, 2014
    Size: H4Verified Purchase
    This is a pretty straightforward kit. The factory harness from one light plugs into this new harness and serves as the signal from the factory light switch to the new relays, which are connected directly to the battery positive post. This way, you have better, heavier wiring directly from the battery to your lights, instead of going through a maze of the crummy factory wiring. This gives the lights the full amount of power that they should have...not any extra power. So, you won't be blown away by the extra brightness...but you're now getting the full potential from your lights. One nice thing is that you can upgrade to better lamps now, as they'll get all the power they require. I installed these on a 91 Jeep Cherokee with it's old, original, cheap lights. There was a definite difference in brightness. It's definitely worth the money. It's not like installing a new set of projector lights or anything, but for the money there is added brightness. And it is quick to install. I installed it in probably 20 minutes. This is obviously a Chinese product, as the wording on the box and in the directions is hilarious. It's almost worth the money to buy the product just to get a laugh at how they translated everything into English. The quality of the kit is just "okay". Nothing exceptional here. But, I believe, it's enough to do what it should. Bottom line, buy this kit before you buy new lights. Then, you'll be properly set up if it isn't bright enough to run whatever lights you choose and get the most bang out of them.
    One person found this helpful
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    Top reviews from other countries

    dsen
    5.0 out of 5 stars Great harness for H4 light upgrade
    Reviewed in Canada on September 11, 2020
    Size: H4Verified Purchase
    Quality harness for installing H4 lights with relays on an old Chevy. No worries about overheating the old factory wiring without a relay.
    Report
    Static17
    5.0 out of 5 stars Excelente producto.
    Reviewed in Mexico on January 7, 2020
    Size: H4Verified Purchase
    Excelente producto.
    Report
    E. J. Petheriotis
    4.0 out of 5 stars Product is pretty good quality but I expected slightly heavier gauge wiring
    Reviewed in Canada on October 29, 2015
    Verified Purchase
    Arrived quickly. Product is pretty good quality but I expected slightly heavier gauge wiring. Although I expected heavier wiring this harness did the job once installed, my headlights(HID projectors and ballasts) no longer flicker from not getting enough power!! Maybe 4.75 rating would be deserving :)
    Report
    Baller77
    5.0 out of 5 stars A must for a Jeep XJ
    Reviewed in Canada on October 2, 2018
    Size: H4Verified Purchase
    Used for my 2001 Jeep XJ Cherokee. Made a huge difference, the stock wiring is a little under-engineered. Everyone with an XJ should upgrade the headlight harness.
    100% plug in, no cutting or connecting unless you want to shorten it to fit better. I didn’t
    One person found this helpful
     Report
    Patrick J-R
    4.0 out of 5 stars Powerful and quick to install
    Reviewed in Canada on May 7, 2018
    Verified Purchase
    The relays are always clicking when my day lights are on... had to replace with higher quality relays!

    But wow! What a difference in light!
    Report