On our LS swapped ObS truck, we are keeping the factory wiring harness/fuse block to retain factory gauges. This is the process I used for my 97 GMC RCSB 4.3 v6/4l60e auto.
#chevy #dragracing #napa #chevrolet #holley #lsswap #lsswaptheworld ‪@LT1SWAPCOM‬ #gmc #obschevy #harness