I'll get straight to the point. I have a 91 Z-28 , it had a 305 TPI with speed density and a 700r4 auto trans. I just recently picked up a Painless Wiring for a LT1 94-95 and a 94 LT1 with 4l60E Trans. The point is the orignal harness has yet to be touched, I want to know which wires to pull from the original setup and which ones to leave,they all seem to be twisted, I ask and would probally refer to the manual but, I havn't found a good source for my year camaro. I know the orignal ECU can go, but do I pull the orginal fuse box out under the dash on the driver side , do i just route around it,, also does any know where the wires right next to the master cylinder leads to and what those wires do,, Help this is the pain in the *** part... Any one that has performed this tranfomation please post a message on this message board.

 

Call this guy....

Chae Lavin 1-956-287-8582. He does the swaps for a living and was a MAJOR help w/ my RS swap. Now, that is his personal number not the business number so don't go calling him at 3am and saying that Brett referred you to him! LOL

He's out in Texas. Very helpful guy and can answer your questions.

I'd sit down and talk you through some of it right now but I've got to be 20 miles from here in 15 minutes so I've got to run.

 

Ok well you'll need a Haynes Manual, Chilton Manual from your original car. You'll have to match up the wires, it's not really hard it just takes time...GM works in color codes and color codes haven't changed in since fuel injection system are available.

this is what you need to match ...

VATS 16 pin
|------------------------|
A8| [] [] [] [] [] [] [] []| A1
B8| [] [] [] [] [] [] [] []| B1
|------------------------|

Slot Wire Color Description
A1 Orn Power feed from ECM BAT fuse #4
A2 Pnk Power feed from ECM IGN fuse #5
A3 DK BLU Fuel enable signal
A4 YEL/BLK Starter enable relay control
A5 GRY "Security" indicator lamp control
B5 BLK/WHT Ground
B7 PPL/WHT Ignition key resistor return
B8 WHT/BLK Ignition key resistor feed

| | Top White 10 pin
|K|J|H|G|F|
|A|B|C|D|E|

K is DK GRN and is the coolant temperature feed to instrument cluster.
J is DK GRN/WHT and is fuel pump replay control
H is empty.
G is DK GRN/WHT and is vehicle speed signal.
F is GRY and is fuel pump motor feed.
A is RED and is Alternator feed to instrument cluster.
B is TAN and is oil pressure feed to instrument cluster.
C is BRN and is oil level feed to instrument cluster.
D is empty.
E is empty or if you have a manuel tranny it is the clutch anticipate signal and is GRY.

| | Top Blue 10 pin
|K|J|H|G|F|
|A|B|C|D|E|

K is TAN/BLK and is (Automatic) torque converter clutch control.
J is ORN/BLK and is (Automatic) park/neutral feed from transmission position switch.
NOTE: If this vehicle is manuel the wire would be LT GRN and would be (manuel) backup lamp feed.
H is LT BLU/BLK and is (Automatic) TCC switched power feed.
NOTE: If this vehicle is manuel the would be be BRN and be (manuel) power from turn B/U fuse # 2 to backup switch and would be brown.
G is PNK and power feed from ECM IGN fuse # 5
F is DK GRN/WHT and is A/C request signal
E is DK BLU and is theft deterrent - fuel enable feed.
D is WHT and is techometer signal to instrument cluster.
C is WHT/BLK and is diagnostic request signal.
B is service engine soon indicator feed.
A is empty.

Black Connector 4 pin
|A|B|C|D|
A is PPL and is ignition (crank starter)
B is BLK/WHT Ground
C is ORN Power feed from ECM BAT fuse #4
D is Empty

C100. It connected (on the 93) to the underhood fuse block.
|A|B|C|D|E|
|K|J|H|G|F|
| |
A is PNK and is power feed from injector fuse 9
B is DK GRN/WHT and is A/C compressor relay control
C is DK GRN and is A/C compressor clutch solenoid feed
D is TAN and is serial data signal.
E is BRN and is Air Pump Replay Control.
F is BRN and is power feed from FANS/SOLs Fuse 6
G is PNK and is power feed from ignition fuse 11
H is DK BLU and is secondary coolant fan relay control
J is DK and is primary fan replay control.
K is PNK and is power feed from injector fuse 10.