58 Nomad 409 Tripower injector wiring
3-2 tbi units installed starting to run wiring, question is the tbi injectors connector wires are different colors and match up to the harness colors- but- harness was not made to line up with colors to match?? ecm is inside vehicle and goes thru the firewall where original gas pedal linkage once was (near the brake booster) along firewall behind engine and pops up passenger side below dizzy and along intake manifold to each tbi unit, connector to each tbi splits off and lines up with injector connector but are not the same wire color.
tbi units are placed where Fitech tech support said to put them, #1 w/tmap front of engine,#2 w/throttle linkage arm and tps, #3 IAC and vacuum port to brk booster.
Does it matter??
Good question. Hopefully someone with a 3 deuce will chime in. May need to talk with Fitech.
I did have a conversation at the Fitech booth in Goodguy's show about the varying wiring color definitions from unit to unit. They are working to correct that. May not be directly your issue, but it will help with diagnosing from unit to unit.
Went to the shop yesterday and looked at the Nomad, incorrectly said the 3rd tbi unit had the IAC, #2 has both IAC and TPS #3 has vacuum port for brk booster.
I thinking because Fitech support said to set up linkage so that all units open at the same time (not progressive) that all injectors are functioning at the same time, have sent a query to support but no answer yet.
BTW going to remove fuel tank which currently is setup returnless and either set up with return line using the in place Fitech intank pump with Holley's fuel pick or install a GM module with Vapor Worx fuel pressure control , just kicking that around right now.
Answer from Fitech tech email, "doesn't make any difference how the injectors are plugged in" so can assume all injectors function together.