Join Date: May 2009
Location: S. Florida
John89v8 is offline
Re: 1987 s10 wiring help
Here ya go just finished wiring my 89
I'm using Speedway as well,I used some of the old wires coming through the firewall to connect my guages (sender to guage), cut them from the inside and wired them to a 10 wire( got it from salvage yard any door connector harness or power window connector will work) connector for all my guages to work, this way if I ever need to remove my guage panel everything is on a connector just disconnect it and pull panel. From the stock harness all I really used was 2 reds to alternator, purple to starter, wiper harness and pink key on to power my Intrepid fans through relays, and of course headlights and horn which I made a seperate harness for, used lights on and high beam signal wires to trigger relays with 12 guage harness I made. Fuel sender I pulled signal from harness coming from rear of truck, Reverse and neutral,( using BM shifter) TCC was all done from inside cab The rest I didn't use, cut them back wrapped them and saved them in case I ever need to add anything else through firewall.
1989 S10 Blazer 2 Dr.
LS2 Iron Block(LQ9/ C6 Parts), 4L80 and Ford 8.8