1991 syclone engine wiring help
- Thread starter 91syclone832
- Start date
Petesgn
Member
Re: 1991 syclone engine wiring help
The 3 prong connector is the o2 sensor connector I believe , the one in the middle is the Hvac fan relay connector .
I NEED HELP WITH THIS ALSO THANKS TO EVRYONE FOR YOUR HELP GOD BLESS[/IMG]
The 3 prong connector is the o2 sensor connector I believe , the one in the middle is the Hvac fan relay connector .
Slyclone
Well-known member
Re: 1991 syclone engine wiring help
im not going to say im right, but the last one that you dont know looks like a hb4 halogen plug. like a 3 prong plug. 2 vertical one slotted horizontal.. it may run up to the front of the truck and operate your headlights. I just did all my wiring last night. alot of it looks firmilliar, you did mention there are plugs changed around. I dont know what thats all about.
im not going to say im right, but the last one that you dont know looks like a hb4 halogen plug. like a 3 prong plug. 2 vertical one slotted horizontal.. it may run up to the front of the truck and operate your headlights. I just did all my wiring last night. alot of it looks firmilliar, you did mention there are plugs changed around. I dont know what thats all about.
91syclone832
Banned
Re: 1991 syclone engine wiring help
Its not for headlight those are for solenoids on the firewall i believe i could be wrong. But im sure its not the headlights because i already check those out they are identical almost but the headlights run all the way to the front on the right side and these are in the middle by firewall
Its not for headlight those are for solenoids on the firewall i believe i could be wrong. But im sure its not the headlights because i already check those out they are identical almost but the headlights run all the way to the front on the right side and these are in the middle by firewall
91syclone832
Banned
Re: 1991 syclone engine wiring help
If anyone has o2 sensor harness or spare solenoids or partnumbers for them let me know
If anyone has o2 sensor harness or spare solenoids or partnumbers for them let me know
91syclone832
Banned
Re: 1991 syclone engine wiring help
ok i guess its not as bad as i thought...
all together i needed relays$50?,02 sensor $45.00,coil $30 and coil pigtail to distributor, injector harness $100 shipped, starter $100, battery 70$ cap and rotor $25 oil,and a year warranty on the parts i would have went with new harness but i already bought the injector harness and i would just lose money on it.... tomorow im getting the starter, oil, relays so i can get her turning over i still need the line to the external oil filter if i cant find them what can i do?
ok i guess its not as bad as i thought...
all together i needed relays$50?,02 sensor $45.00,coil $30 and coil pigtail to distributor, injector harness $100 shipped, starter $100, battery 70$ cap and rotor $25 oil,and a year warranty on the parts i would have went with new harness but i already bought the injector harness and i would just lose money on it.... tomorow im getting the starter, oil, relays so i can get her turning over i still need the line to the external oil filter if i cant find them what can i do?
REVEREND HARMON
Party in a box!
Re: 1991 syclone engine wiring help
http://www.syty.net/forums/showthread.php?t=67954&highlight=block+oil+filter
i still need the line to the external oil filter
http://www.syty.net/forums/showthread.php?t=67954&highlight=block+oil+filter
Petesgn
Member
Re: 1991 syclone engine wiring help
Looks like its been without a oil cooler for awhile .
You can find the cooler lines aftermarket
http://www.ebay.com/itm/88-94-S10-BLAZER-JIMMY-4x4-Oil-Cooler-Lines-Hoses-S-10-/370090855134
Is Luis , Beto or Juan helping you on this ?
Looks like its been without a oil cooler for awhile .
You can find the cooler lines aftermarket
http://www.ebay.com/itm/88-94-S10-BLAZER-JIMMY-4x4-Oil-Cooler-Lines-Hoses-S-10-/370090855134
Is Luis , Beto or Juan helping you on this ?
91syclone832
Banned
Re: 1991 syclone engine wiring help
not yet so far im flying solo on this.... thanks for the link
not yet so far im flying solo on this.... thanks for the link
Petesgn
Member
Re: 1991 syclone engine wiring help
If you need help let me know , I'm local . Pm me your number
SY2455
70's Veteran
Re: 1991 syclone engine wiring help
It looks like it was set up for a MSD ignition box with the spices you have.ok i know the hood is gay but it works and a one man party pin on style(havent bolted it on yet) and the grille is gay also i am looking for a stock gmc grill maybe someone will trade me who knows. ok i got most of the wiring plugged in found out im missing maybe 1 or 2 more harnesses besides the injector harness i just ordered, and my distributor harness is spliced so well start there
91syclone832
Banned
Re: 1991 syclone engine wiring help
yup it used yo have it but im just going to splice it back together
yup it used yo have it but im just going to splice it back together
91syclone832
Banned
Re: 1991 syclone engine wiring help
Yes i am planning on losing them they are for sale
Yes i am planning on losing them they are for sale
V
Donating Member
Re: 1991 syclone engine wiring help
Unless I'm mistaken, the large connector on the left doesn't match any of the stock SyTy connectors. There aren't that many heavy gauge wires in that color combination in the harness. What do those wires lead to? Maybe someone can figure it out for you if you post more pics.
I NEED HELP WITH THIS ALSO THANKS TO EVRYONE FOR YOUR HELP GOD BLESS
Unless I'm mistaken, the large connector on the left doesn't match any of the stock SyTy connectors. There aren't that many heavy gauge wires in that color combination in the harness. What do those wires lead to? Maybe someone can figure it out for you if you post more pics.
91syclone832
Banned
Re: 1991 syclone engine wiring help
they are for the relays on the firewall one i believe is for the a/c pump and one is for the intercooler pump
they are for the relays on the firewall one i believe is for the a/c pump and one is for the intercooler pump
V
Donating Member
Re: 1991 syclone engine wiring help
I think you're partly correct. I agree with Pete. The middle connector is for the relay located on the blower fan housing. Its wires are red, purple, black, black/white, orange and blue.
The stock relays on the firewall are (from left to right, looking at engine):
turbo boost cut-out
- green, pink/black, orange and pink/blk wires (green and dark green ignored for simplicity).
Intercooler pump
- red, orange, yellow and pink/black wires.
A/C compressor
- green, pink/black, green/white and green/white wires.
Fuel pump
- gray, green/white, black/white and orange (diagrams say red) wires.
The first two relays are near the large power junction block on the firewall.
The last two relays are near the large firewall connection (C100) and the brake booster. In some cases, I have seen these relays reversed.
I think the left connector might be for the intercooler pump relay, but it's not stock and your harness is FUBAR.
I think you're partly correct. I agree with Pete. The middle connector is for the relay located on the blower fan housing. Its wires are red, purple, black, black/white, orange and blue.
The stock relays on the firewall are (from left to right, looking at engine):
turbo boost cut-out
- green, pink/black, orange and pink/blk wires (green and dark green ignored for simplicity).
Intercooler pump
- red, orange, yellow and pink/black wires.
A/C compressor
- green, pink/black, green/white and green/white wires.
Fuel pump
- gray, green/white, black/white and orange (diagrams say red) wires.
The first two relays are near the large power junction block on the firewall.
The last two relays are near the large firewall connection (C100) and the brake booster. In some cases, I have seen these relays reversed.
I think the left connector might be for the intercooler pump relay, but it's not stock and your harness is FUBAR.
Last edited:
randy merritt
Donating Member
Re: 1991 syclone engine wiring help
I just installed a similar harness on my truck, I am pretty sure it is a MSD GM dual connector single coil harness Part #8876, although the color of the connectors is wierd. I know another board member called this harness as that, but I just wanted to verify.
ok i know the hood is gay but it works and a one man party pin on style(havent bolted it on yet) and the grille is gay also i am looking for a stock gmc grill maybe someone will trade me who knows. ok i got most of the wiring plugged in found out im missing maybe 1 or 2 more harnesses besides the injector harness i just ordered, and my distributor harness is spliced so well start there
I just installed a similar harness on my truck, I am pretty sure it is a MSD GM dual connector single coil harness Part #8876, although the color of the connectors is wierd. I know another board member called this harness as that, but I just wanted to verify.
