[68c10airstream]

In my post above (# 20) i was remembering customers coming in with a dash oil pressure gauge reading incorrectly and changing the silver tall can near the distributor. I,ve swapped a few of these tbi motors and agree about some switch?? down by the oil filter boss. When i looked in alldata circuit #31 looked to be shown for 2 different circuits, so i assumed the base cheap truck would use a switch for a bulb on the dash, and a upscale deluxe truck with full gauge package (oil pressure gauge) would use a sender, not realizing that these trucks used both if i understand correctly. I'm not here to upset anyone just trying to help, and through the years using alldata has been hit and miss, especially with wiring.