Need help. I am installing a 1990 5.7 liter V8 with a 700r4 I have the original wiring harness out of the doaner truck & the ECM. I'm wanting to replace my excisting 235 w/ofenhouser duel 1 bbl intake, Fenton headers, & Munci 4 Speed. I want to upgrade tp AC, power steering, power brakes, etc. I'm looking for info on proper setup of relays & all that is needed to convert my 55 1st series to a throttle body injection. I don't want to install anything that is not needed. Unfortunatly My funds are limited so I would like to try to make what I have work before I have to buy a new wiring harness. Any info are direction to what I need would be greatly appreciated. Sincerly, Some What Confused
I don't have any diagrams but I believe most auto parts stores carry Haynes manuals, which has some wiring diagrams in the back of the book. My memory could be fuzz here, but I only seem to remember a fuel pump relay and possibly a cruze control relay (don't remember if 90 had one or not) for earlier tbi setups. You might want to search for jeep tbi conversions, since they basically use the same straight motor as these trucks do.
