The Stovebolt Site Forums The Shop Area The Electrical Bay 41 gmc vs. 41 chevy wiring harness

did you already remove the old harness? if not carefully trace it out before you tear it out and then install the new wiring the same way. i rewire a 40 gmc and a 40 chevy. for the temp gauge they both have the cap. tube. after i traced out my old harness on my gmc and tore ot out back to the battery i noticed that a previous owner converted it to neg ground. for other reason i left it the way it was. i took two prints as i ripped out the old wiring i highlighted what i had ripped out. when all the wiring is removed the whole print should be highlighted. when installing the new wiring doing the same thing. when the print is all high lighted there shouldnt be any loose terminals left over. when you lay out the harness in its correct orientation mark both ends of a circuit with tape as to where it comes from and where it goes. this made it simpe for me. both harnesses i did came from carter. yours should be the same except from american classic. it was only wired from the factory one way and any new harness should reflect that. the 39 - 46 harness are the same with some optional wires for park lights and turn signals.