acfortier Posted August 30, 2021 Share Posted August 30, 2021 I want to add fogs to my Comanche, so I went to the JY and grabbed the headlight harness from an XJ (I think it was a 96). I was under the impression that I had all of the wiring from the cab to the 10-pin connector already there (BRN/WHT wire from the fog lamp switch), but after comparing the two, it seems that I might be missing another BLU wire? On my truck, I have: So I'm missing pins 9 and 1. On connector of the harness I snagged, There are wires in both pins 9 and 1, which I believe are both used by the fog light wiring. Pin 9 on the connector I snagged is a BLU wire, and Pin 1 is a BLU/BLK. This is how the harness I pulled is wired: Does this make sense? Do I need Pins 9 + 1 for this to work? Link to comment Share on other sites More sharing options...
eaglescout526 Posted August 30, 2021 Share Posted August 30, 2021 I did this and found it to be painless. Last I remember the Renix harness uses a light green with tracer wire for the fog lamp switch. I just simply removed one of the wires, out it in the factory harness and ran that wire that was just added to the fog lamp relay. Thats without really molesting anything and real plug n play. Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 25 minutes ago, eaglescout526 said: I did this and found it to be painless. Last I remember the Renix harness uses a light green with tracer wire for the fog lamp switch. I just simply removed one of the wires, out it in the factory harness and ran that wire that was just added to the fog lamp relay. Thats without really molesting anything and real plug n play. I thought it was going to be fairly plug n play, too. But it seems that I'm not quite following how it's wired up. I'm not sure I follow what you did either? You removed which wire? Link to comment Share on other sites More sharing options...
eaglescout526 Posted August 31, 2021 Share Posted August 31, 2021 So I took a wire from the JY harness. Terminal and all and I put it in the harness installed on my truck to where the fog lamp switch is wired up. I then followed instruction HOrnbrod posted many years ago and simply got it all installed from there. The headlamp harness connector does come apart to where you can add or subtract wires from it. This is what I used and followed it to a T Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 1 minute ago, eaglescout526 said: So I took a wire from the JY harness. Terminal and all and I put it in the harness installed on my truck to where the fog lamp switch is wired up. I then followed instruction HOrnbrod posted many years ago and simply got it all installed from there. The headlamp harness connector does come apart to where you can add or subtract wires from it. This is what I used and followed it to a T I do remember seeing this--thanks for that. However, do your fog lights stay on if you put the HI beams on? Link to comment Share on other sites More sharing options...
eaglescout526 Posted August 31, 2021 Share Posted August 31, 2021 No problem. No, my lamps turn off like they should with the hi-beams. Are you after using your lamps with hi-beams? I recall that being a law or an issue somewhere for some or most states. Link to comment Share on other sites More sharing options...
fiatslug87 Posted August 31, 2021 Share Posted August 31, 2021 (edited) The stock set up disables the fogs when the high beams are activated. Edited August 31, 2021 by fiatslug87 eaglescout526 beat me to it Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 3 minutes ago, eaglescout526 said: No problem. No, my lamps turn off like they should with the hi-beams. Are you after using your lamps with hi-beams? I recall that being a law or an issue somewhere for some or most states. 2 minutes ago, fiatslug87 said: The stock set up disables the fogs when the high beams are activated. Perfect, I want them to shut off when the HI beams are on. So it sounds like I don't have to worry about those other wires, and just follow the diagram above. Easy enough! I'm assuming Pin 1 or 9 is 12V fused somewhere at the fuse panel, which would make sense. Link to comment Share on other sites More sharing options...
eaglescout526 Posted August 31, 2021 Share Posted August 31, 2021 So yeah its simple as that. Good luck! Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 Does anyone know the terminal pin sizes/type/brand used for the 10-pin headlight connector? Thinking I would prefer to run a new wire rather than re-use a 25+ year old one. Link to comment Share on other sites More sharing options...
Minuit Posted August 31, 2021 Share Posted August 31, 2021 That connector is unobtainium and a notorious un-sealed, corrosion prone POS that's placed in about the worst possible location. Believe me, I've tried to find out what it is and if I could get pins and connector bodies. It shares similarities with some stuff I've seen in older British stuff, and knowing AMC that doesn't surprise me. If that connector ever gives anyone problems, my default recommendation is to hack it off and replace it with a Deutsch connector... or anything, you know, good. The front harness with fog lights was plug and play in my 91, but I'm thinking the front lighting harness wiring changed at some point between 91 and 96 to make them incompatible. I believe my harness was from either a 92 or 93 with factory fog lights - and like I said, plug and play once I added the switch inside the dash (the wiring inside the cab is already present), the bulb for the switch panel, a fuse in the engine bay fuse box (labeled AUX LAMPS), and switched out the front harness. Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 Well, that's unfortunate. I'm about to get a new 10-pin connector and do it that way... Yeah, I think I'll be solid if I follow that image above. I just assume the other wire(s) provide 12V via a fuse. Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 Actually, does the stock setup actually go to a fuse in the fuse box? Or is there a fusible link somewhere? I'm not seeing it in the electrical manual. Link to comment Share on other sites More sharing options...
Minuit Posted August 31, 2021 Share Posted August 31, 2021 9 minutes ago, acfortier said: Actually, does the stock setup actually go to a fuse in the fuse box? Or is there a fusible link somewhere? I'm not seeing it in the electrical manual. The load side of the fog lamp relay is fed 12V through the AUX LAMPS fuse in the power distribution center. Circuit F39 in the electrical manual. Pages 5 and 30-31. Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 20 minutes ago, Minuit said: The load side of the fog lamp relay is fed 12V through the AUX LAMPS fuse in the power distribution center. Circuit F39 in the electrical manual. Pages 5 and 30-31. Thanks! I'm not seeing that in the '88 electrical manual I'm looking at. Is there a newer one for '91? Link to comment Share on other sites More sharing options...
Minuit Posted August 31, 2021 Share Posted August 31, 2021 27 minutes ago, acfortier said: Thanks! I'm not seeing that in the '88 electrical manual I'm looking at. Is there a newer one for '91? Very little from the '88 manual applies. Check your messages. Link to comment Share on other sites More sharing options...
acfortier Posted August 31, 2021 Author Share Posted August 31, 2021 Thanks! I'm seeing that the PNK/GRN wire that feeds the relay comes from the PDU... I have a 15A fuse in the AUX LAMP position, funny that I don't have a wire coming from it. EDIT: I lied, I do have that PNK/GRN wire coming into the headlight harness, which must be coming from the AUX LAMP. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now