ak diesel driver
6.5 driver
Working on my son's 89 k2500. The PO had taken out the tbi engine and swapped in a (I think) 70s sbc. I got all the gauges to work and it charges now so so far so good. I read online that I can swap a 91 instrument cluster and everything should work, my question is about the tach. Is it as simple as hooking up the white wire that used to connect to the distributor and have the tach work in the new cluster?