Hi everyone recently a family member wrecked my 96 z28 so I bought a 94 z28 roller and swapped out engine, pcm, wiring harness, etc.. The problem i am having is the wiring differences, i know most of the wiring is the same but I know
there are a few exceptions harness c220 pin E, c230 pin G and i cant find anything on c100, c105

c220
1994

Cavity Wire Color Description
A Red Generator feed to instrument cluster
B Tan Oil pressure feed to instrument cluster
C Brown Oil level feed to instrument cluster
D Orange/Black Spark Retard Request
E Tan/Black Throttle Position Sensor Signal (EBTCM)
F Tan Serial data signal
G Dk Green/White Vehicle speed signal
H Dk Blue/White (Automatic) Performance switch signal
(Manual) Skip shift indicator control (V8 VIN P only)
J Dk Green/White Fuel pump relay control
K Dk Green Coolant temperature feed to instrument cluster

1997

Cavity Wire Color Description
A Red Generator feed to instrument cluster
B Tan Oil pressure feed to instrument cluster
C Brown Oil level feed to instrument cluster
E Pink Power feed from PCM ignition Fuse #13
G Dk Green/White Vehicle speed signal
H White Skip shift indicator control
J Dk Green/White Fuel pump relay control
K Dk Green Coolant temperature feed to instrument cluster

C230

1994
Cavity Wire Color Description
A Lt Blue (Automatic) Performance switch indicator control
(Manual) Clutch anticipate signal (V6 VIN S only)
B Brown/White Service engine soon indicator feed
C White/Black Diagnostic request signal
D White Tachometer signal to instrument cluster
E Dk Blue Theft deterrent-fuel enable feed
F Dk Green/White A/c request signal
G Pink Power feed from PCM ignition Fuse #5
H Lt Blue/Black (Automatic) TCC switched power feed
H Brown (Manual) Power from turn/back-up Fuse #2 to back-up switch
J Orange/Black (Automatic) Park/neutral feed from transmission position switch (V8 VIN P only)
J Lt Green (Manual) Backup lamp feed
K Tan/Black (Automatic) Torque converter clutch control

1996-1997
Cavity Wire Color Description
A Grey (Manual) Clutch anticipate signal
(V6 VIN S only-1996, VIN K only-1997)
B Brown/White Service engine soon indicator feed
C White/Black Diagnostic request signal (V8 VIN P)
D White Tachometer signal to instrument cluster
E Dk Blue Theft deterrent-fuel enable feed
F Dk Green/White A/c request signal
G Pink Power feed from engine senor Fuse #10
H Lt Blue/Black (Automatic) TCC switched power feed
H Brown (Manual) Power feed from engine sensor Fuse #10
J Orange/Black (Automatic) Park/neutral feed from transmission range switch (V8 VIN P only)
J Lt Green (Manual) Backup lamp feed
K Purple Output field service enable

any help would be greatly appreciated thanks!!!

 

Had a hard time following this at first....but, why didn't you just use your good engine from your 96 and put it in the 94 and use the 94 wiring? Would have been easier to do it that way than to swap every thing from the 96 to the 94.

 

94 shell did not come with harness or pcm also wanna keep the car obd 2

 

pink wire is the same on pin G as c105's B everything else in c105 just crap (traction control and cruise control) there doesn't seem to b2 many differences but the things that r different seem to matter the wires i am most concerned with are C220 pin E on a 94 it is (Throttle Position Sensor Signal (EBTCM)) and on a 96 its (Power feed from PCM ignition Fuse #13). C230on a 94 pin G is (Power feed from PCM ignition Fuse #5) and on a 96 pin G is (Power feed from engine senor Fuse #10) everything else is the same, not used, or can be eliminated.

C105
1995-1997
Cavity Wire Color Description
A Orange/Black Traction control system spark retard
B Pink Power feed from Fuse #10
(injectors 1995/eng sensor 96-97)
C Tan/Black Traction control system throttle position
D Dk Green Cruise control signal-disengage (V6 VIN K only)
E Tan Serial data signal (VIN P and K)
F White Cruise control indicator lamp output (V6 VIN K only)
G Lt Blue Traction control active

 

take all the wiring out of your 96, install it into the 94 and be happy. There were differences in the way the car is wired in the trans, bcm, computer (94 has an ecu and trans comp the 96 has a PCM controls both) the instrument cluster is also different. It seriously would be easier to simply swap the entire harness intact rather than splice it.

Massey

 

i am using the 96 engine wire harness and computer my concern is the 3 lines from the engine wire harness to the car when the 96 was totaled the wiring in the dash of the car was destroyed by the custom console if u mean to switch the wiring in the dash

 

So you are using the gauge cluster from the 94? The 94 didnt use the computer for all of the sensor inputs and the 96 cluster did. Your fuel, amp, and I believe oil will all be wired differently. You have a large can of worms and you really should have the wrecked car handy for this job.

Not only that the security system for the 94 was in 3 different modules in different locations of the car, the 96 only has one, the BCM. Your computer needs the go/nogo signal from the BCM in order to turn on the fuel pump for the engine to run. This is just one of the worms in your can.

Massey

 

the 94 is still complete the only thing from the 96 is power plant and pcm with engine wire harness so security, fuel gadges will remain uneffected and the wiring from the engine harness is almost exactly the same functionality and color cordially only a very few wires are
Different mainly the pink (power feed from pcm fuesed #10

 

Well it sounds like you already know what you need. Good luck

 

you will not be able to scann it for trouble codes without the under dash wiring. need the obd2 plug.