Jeep CJ- Lighting Upgrade Installation - Page 6 - JeepForum.com
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post #76 of 93 Old 08-17-2020, 08:30 AM Thread Starter
Matt1981CJ7
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IIRC, the new harness should have one male connector and 2 female connector.s The female connectors plug directly into the headlights. The male connector plugs into the female connector that originally connected to the passenger side headlight. You shouldn't have to splice anything, or remove any of the original harness.

I hope that helps.

Matt



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post #77 of 93 Old 08-17-2020, 08:37 AM
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Ok, thanks guys. I'll recheck and get back with ya'll.
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post #78 of 93 Old 08-17-2020, 09:21 AM
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Ok, of course you guys were right! Here are my next two questions;

1. It looks like the wire that connects to + battery terminal may not be long enough. There is an ignition solenoid mounted on wheel well near battery. The + cable from the battery connects there. Can I connect new harness battery wire there with the + from battery?

2. The male plug from new harness that connects to female of old harness won't reach driver's side plug unless I re-route all the old wiring. Can't I plug new harness into old plug at passenger's side bulb?
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post #79 of 93 Old 08-17-2020, 09:42 AM
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1. Yes,
Disconnect the battery post terminal for safety first
Make sure you use two wenches on the solenoid post so you don't twist the post or you will run into other problems

2. Yes, As Matt says, use the passenger side headlight plug.


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post #80 of 93 Old 08-17-2020, 09:46 AM
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Oh yeah, he did say that! Thanks again.
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post #81 of 93 Old 08-17-2020, 09:54 AM
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$20 on Amazon gets you this sealed relay/fuse box. Doesn't come with relays or fuses but that just makes you think a little harder. Comes will all the crimps and seals. I'm already at four relays (2 for fans and 2 for headlights) and I hate inline fuse holders, so this box really cleans up the engine compartment. Just thought it might be helpful on this thread.

https://www.amazon.com/dp/B07MR64XK1...NsaWNrPXRydWU=
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post #82 of 93 Old 08-17-2020, 11:39 AM
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(-) terminal removal; First and Last! . . . Always!
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post #83 of 93 Old 08-17-2020, 02:33 PM
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Quote:
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(-) terminal removal; First and Last! . . . Always!
Yeah, that would be better. You can create a short disconnecting the (+) cable so removing the (-) is best.


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post #84 of 93 Old 08-17-2020, 03:52 PM
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Will do, thanks.
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post #85 of 93 Old 08-18-2020, 05:09 PM
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Ok, I'm back!
I just finished installing the new wiring kit and installed everything like it should. Turned on the lights and passenger side is super bright but driver's side is significantly much dimmer than the other light. Much dimmer than with old wiring system! What could be causing this? The dim light is a brand new bulb installed today.
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post #86 of 93 Old 08-18-2020, 05:32 PM
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So my first theory is that the driver's side wiring only has two wires that go into the plug that connects to bulb. Shouldn't there be three wires? Shouldn't one be a ground? The driver's side light is not grounded. And according to the manufacturer's diagram it should.
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post #87 of 93 Old 08-18-2020, 06:21 PM
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So my first theory is that the driver's side wiring only has two wires that go into the plug that connects to bulb. Shouldn't there be three wires? Shouldn't one be a ground? The driver's side light is not grounded. And according to the manufacturer's diagram it should.
Exactly, There should be three wires. High, Low and ground.

I'm surprised it's not in there, I would send it back or add the ground.
You could push the old ground out of the old headlight socket and plug it in the new one or install a new ground terminal and wire or send it back and get a good harness.

Or call them and ask them to send you a new ground wire and you can plug it in. Just ground it the same place the old ground was.


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post #88 of 93 Old 08-18-2020, 07:21 PM
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Thanks John. The harness must have slipped by the Quality Control Guy. I will probably try and fix it myself, but will also definitely contact the seller and see about a replacement. I should have received the product I paid for, not a defective one. Thanks for the help.
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post #89 of 93 Old 08-18-2020, 07:53 PM
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On my other DD 'Strayhound' ('98 Ford van w/Multifunction Switch) I converted from composite headlights to Sealed Beam H4's recently and had the very same issue. I did several diagnostics and despite help from here and elsewhere but to no avail. I just wired in the foot dimmer from 'Black Betty' and wha-la the low and high beam function properly so I'm purchasing another foot dimmer and I'm off to the races.

The parts shop that stocks part for Skylab II will not have parts for our year/model of Jeep
We cannot accurately judge the trajectory of a speeding critter (cat, dog, sasquatch)
Record heat waves and floods only occur when we visit that area
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post #90 of 93 Old 08-19-2020, 11:44 AM
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Quote:
Originally Posted by John Strenk View Post
Exactly, There should be three wires. High, Low and ground.

I'm surprised it's not in there, I would send it back or add the ground.
You could push the old ground out of the old headlight socket and plug it in the new one or install a new ground terminal and wire or send it back and get a good harness.

Or call them and ask them to send you a new ground wire and you can plug it in. Just ground it the same place the old ground was.
Totally agree with John - (as we all should) but, specifically, send it back - we shouldn't be surprised at mistakes in wire harness assemblies - these are usually small companies that make 1s and 10s of things at a time.

I'm literally dealing with a friends 2012 Wrangler that has two LEDs being supposedly triggered from a single relay BUT, someone screwed up and joined 85 & 87 to ground forcing the power from the light switch to be the only power for the lights!

Took me longer to find the mistake then it took to fix because I made the assumption 'It's a pre-made wire harness, they surely know what the're doing and I'm the crazy one.' Nope, just a mistake at the 'factory'.

Remember, after you check the printer for paper and call HP and do everything else under the sun to fix the printer - it's the power cord - it's always the power cord - the thing you least suspect.....
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