I recently acquired a 1990 GMC Suburban with a TBI 454. I'm going to transplant the entire setup - engine, sensors, computer and so on into my '69.
I know that Painless makes a wiring harness that would make quick work of it but I'm pretty good with electrical and would rather save the dough and use the factory harness. It's an in-between model year and what I can't seem to find is a decent drawing for it. The Haynes book for 67-91 Suburbans ain't even close. The Chilton book for 88-98 Suburbans is close but still lacks alot of drawings I would like to see. I know I could probably find them by spending the big bucks on the entire Chevy or Chilton Service Manuals but I thought I might check with the good people here first. Does anyone have the wiring schematics for this vehicle or can point me in the right direction. I would greatly appreciate the help.