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I have got almost all the wiring complete and am looking for the oil pressure gauge wiring and the water temp gauge wiring. i just need to know what connectors and pins they are. other then that swap is mostly done. got all the parts and now just need the motivation...
can someone help with the locationsof the 2 wires i am looking for?
harness is completely done but has 3 wires hanging out now, SES light, temp and oil sender wires. HELP please!?!?!:help:
you need to know which wires come from the truck and hook to the senders? My 92 and both 93s I've done, the wires come from the firewall block on the driver side between the brake booster and the fender.
ya i need the truck end. i kinda figured that but someone went happy go lucky with the side cutters and removed alot of wiring and i have a pinout of the connector for a 99 and it is a little different. i am looking for the pin numbers in that connector. thanks
Sorry, I don't have the dash harness info in my manual for the newer trucks, only up to 94. :(
The newer ones have firewall connectors? That's a new one on me.
O.K., here goes...The main "C-100" firewall connector, on the drivers side firewall, consists of an arrangement of wire "cavity" wires coming out of it. This arrangement is more or less in a square pattern, with many wires exiting. From top to bottom, the first row across, from left to right, are the "A" wires(or cavities). The second row across are the "B" wires. Third row are the "C's", fourth row "D's", & fifth row are the "E's". In row C(third row down), the 4th wire across(C4) is a tan wire labeled "oil pressure indicator lamp output". The very next wire, next to it(C5), is dark green & is labeled "coolant temperature indicator lamp output". Its been years, but I think these are the wire outputs I used. This is from a 1996 GM Manuel. '96, '97 & '98 were transition years for our trucks with regards to wiring & some other things, but were very simular. As you might know, '96 was the first year of OBDll, on-board diagnostics, second generation. But your '97 should be the same as my '96. Hope this helps.
perfect...that is what i was looking for.
C4 - oil pressure
C5 - cooant temp
by chance would you know what the ses light pin number is?
that should be a wire that used to go to the old PCM. Was that removed before you got the truck?
like i said someone went crazy with the side cutters on that plug. thats why i was looking for the pin numbers so i can re-add them to the plug.
C100, B6, brown/white wire is the ground for the MIL light. Ground it to test it out, with the key on, of course.
B6 is brown w/white tracer "check engine indicator lamp output". For some reason, row B from left to right, reads like this: B1, B2, B3, B5, B6, B7, B8. Tach Signal is a white wire...B2.Quote:
Originally Posted by blublur
Got your fuel system & fuel pump wiring figured out o.k.?
ya i got everything else all figured out. I kept the factory underhood fuse/relay center and connection to the firewall(C100). once i get these last few wires hooked up plus relocating the MAF and Front 02 wires and plugs, i will plumb the fuel system and she should start right up. I am gonna make sure everything works with the harness unloomed and once i am satisfied, then i will loom it and it should be done and looking super factory, minus the FPR on the firewall.
BTW thanks for all the help guys, its just the diagrams i was working off of was for an OBS 99. and they are a bit different when it comes to these 3 wires. THANKS THANKS THANKS AGAIN!
"FPR on the firewall" What is that? Fuel pressure regulator, or? Your existing in-tank fuel pump/sender will work perfectly "as-is". You know this, right? If you need help with the wire colors on this, also...just ask. Been there, solved that, lol.
well i removed the stock tank, pump, lines, and filter. i am installing a fuel cell, mallory 110fi pump, regulator, ect...The fuel rail is a non-return style so i have to regulate delivery at 58psi.
I do have bigger better plans for it in the future, so why it is down for the motor swap might as well do other improvements that were slated anyways. besides it also makes room to run the true duals straight back instead of the crossover pipe.
all the wiring is done except for the oil sender. i have it hooked to the firewall but i have to hook up the 5v ref and gnd wires to it since they came from the old ecm.
i should really try to get my hands on the gm service manual for the truck, then i could be posting progress instead of asking questions all the time.
with one is the check engine light wire
here you go! this should help alot
http://lt1swap.com/1999_vortec_5.7/i...r_end_view.htm