73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Electrical => Topic started by: rdhack on April 09, 2016, 07:12:11 am
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Just recently put a 1986 4 light system front end on a 1982 cab that had a 2 light system. Will the 1986 harness simply plug into the 1982 cab? and work?
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i know when i went to put a 84 wire harness in my 91 the plug was different. i searched and searched for a wire diagram or info on when they switched styles but i could never find one. i do think that it wasnt till 87 with the ecm did they switch the style plugs but this is just what i think and i have no evidence.
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Thanks but Im hoping that since they did not really change the trucks a lot until 1988 that it may work. Just thought I would ask before plugging it in.....Physically it is the same male plug in....but electrically????
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should be the same. i know the colors stay the same
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If you have the old harness just do a comparison check. If for instance a blue wire goes to the same spots in both connectors it will work, then go on to the next wire marking each as you go. If one coming from the lights goes to a different spot in the connector mark it until you find one that also goes to a different spot. Now you can compare the two and figure out which ones go where and simply move them to where they belong. You really don't even need to worry about wire color really because that may have changed over the years just to screw with the general population. I have robbed many wiring harnesses from different year trucks to make my own for my current truck. I still try to keep with the wiring diagrams though. The wiring itself is time consuming, but it is not all that complicated as long as you mark every wire with painters tape and an explanation of where it comes from and where it goes to and any color changes it might go through between those two spots. Good Luck! Just take your time.
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Thank you......That was what I had intended to do anyway. Just someone to back me up helps a great deal.
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Thank you......That was what I had intended to do anyway. Just someone to back me up helps a great deal.
The GM wiring diagrams for 1986 are on this board in the tech section.
I scanned a set of 1982 GM light truck wiring diagrams recently. Look in my signature they'll be in my mediafire bucket as are the 1986 diagrams.
I don't think irish_alley has updated the tech section with my recent 1982 diagrams.
Sent from my SM-P605V using Tapatalk
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i cant "update" the tech section with out capt downloading the files then i can update the tech section.
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i cant "update" the tech section with out capt downloading the files then i can update the tech section.
Didn't know how that worked... They're in my Mediafire bucket.
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It does work perfectly. Only difference was that the 1986 has the windshield washer pump in this harness. The 1982 has the washer pump in the outer right harness since the wiper motor/pump is the same unit. THANKS to all who replied.