Originally posted by Big Daddy T
I would greatly appreciate it 10 the one in chilton book is screwy. I have installed car sterios for about 15 years .Wires dont scar me but computer wiring is a mess...
ok big daddy on a 1990 chev. pick-up with a 350 there is only one oil pressure switch. thats the 3 prong one on the side of the block. 2 of the wires goes to the fuel pump and one to the gauge in the dash. so if you have a plug for the one on the side of the block thats all you need. i dont have a diagram yet but if you have the 3 prong plug thats all you need.