Ii recently installed the Painless wiring harness designed for the 68-72 Chevy PU in my Blazer- unfortunately it's a few miles away so I can't pop the hood- BUT- if I remember correctly- doesn't Painless have separate wires for "side markers" and separate wires for "turn/park lights"- plus don't the lights ground themselves thru the assemblies? If you hook them up in series, one light goes out- they all go out- not the intention of the Chevy engineers- follow the painless directions, not the chevy manual- the headlight section- heck the entire harness was pretty straightforward- just wish I could see the small print on the wires better.
I can get you better info tomorrow if you need it. Or- the techs at painless are pretty knowledgeable and it's toll free!
Let me know if you need some more help.
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