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Old 11-07-2017, 02:11 PM   #1
GASoline71
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Converting '72 GMC C25 Headlight Harness to Work on '70 Chevy C20

My stepson has acquired a 1970 Chevy C20. He is in the process of convereting it over to 5 lug C10 suspension. But for the time being we just need to iron out some things to make it driveable and more reliable. The front headlight harness is all boogered up. He's on an extremely limited budget. I have a dang near perfect stock front light harness out of my 1972 GMC parts truck I'm going to give him.

How do we convert 4 eyes into 2? It's gotta be an easy conversion and I'm just not seeing the easy way to convert it from 4 headlights to 2 headlights for some reason. Need a little help. Searched forum, but I didn't find any threads.

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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Old 11-07-2017, 02:20 PM   #2
Stocker
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Re: Converting '72 GMC C25 Headlight Harness to Work on '70 Chevy C20

Super easy, just use the 3-prong connectors that were for the GMC's high/low (outer) headlamps. Ignore the 2-prong connectors that were for the inner high-beam-only lamps.
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Old 11-07-2017, 03:31 PM   #3
Steeveedee
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Re: Converting '72 GMC C25 Headlight Harness to Work on '70 Chevy C20

^^^ yup, that's all there is to it. You can strip the high beam only wires out of the harness and retape it, if you want. I personally would, just because I don't like having stuff dangling.
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Old 11-07-2017, 03:51 PM   #4
GASoline71
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Re: Converting '72 GMC C25 Headlight Harness to Work on '70 Chevy C20

No foolin'? Jeez... that is too easy to be true! LOL!

Thanks!

Gary
__________________
'cuz chicks dig scars...

My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

The Rebuild of Creeping Death after the wreck

Quote:
Originally Posted by LONGHAIR View Post
I would never rebuild a 305.
Quote:
Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
Quote:
Originally Posted by Marv D View Post
Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
Quote:
Originally Posted by cableguy0 View Post
Its cheaper to listen to advice given when you ask for help than it is to ignore everyone and wait for carnage.
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