Ok this is for the 98z28 guage cluster...courtesy of gm's tech website (goota love having access to the good stuff to solve our problems)

Pin
Wire Color
Circuit No.
Function

A1
PNK
39
Power feed from gages Fuse 9

A2
DK BLU
1936
Fuel gage signal

A3
GRY
728
SECURITY indicator lamp control

A4
BRN/WHT
419
SERVICE ENGINE SOON indicator lamp control

A5
PNK
39
Power feed from gages Fuse 9

A6
YEL/BLK
68
Low coolant level indicator control

A7
BRN
358
AIR BAG indicator control

A8
PPL/WHT
1572
TCS OFF indicator control (with NW9)

A10
TAN/WHT
33
BRAKE warning indicator lamp control

A11
LT GRN
11
High beam headlights on

A12
PPL/WHT
237
FASTEN SEATBELT indicator lamp control

A13
ORN
640
Power feed from PWR ACCY Fuse 7

A14
RED
225
Generator output indicator control

A15
BRN/WHT
1173
Oil level lamp signal

A16
DK BLU
1537
LOW TRAC indicator lamp control

A17
DK GRN
135
Coolant temperature sensor signal

B1
BRN
9
Odometer illumination

B2
GRY
8
IP illumination lamps feed

B3
BLK
650
Ground

B4
WHT
375
SKIP SHIFT indicator lamp control (V8 only)

B5
DK BLU/WHT
1415
Right turn signal switch output

B12
DK GRN/WHT
817
Vehicle speed signal-4000 pulses per mile

B13
WHT
121
Tachometer signal

B14
LT BLU/WHT
1414
Left turn signal switch output

B15
BLK/WHT
451
Ground

B16
TAN
31
Oil pressure indicator control

B17
LT GRN
867
ABS fail signal


WOOT RACK ONE UP FOR NICK!!

 

Ah very usefull!! Thanks!! Disregard that post in the other thread about getting the manaual for the 98 z28. Thank you very much!! Will definately have to save this link for when I get bored and finish up the 4th gen interior swap Sticky/FAQ I've been messing with.

 

hey can you get that same list for an lt1 cluster? specifically, '95 formula. thanks!

 

As a matter of fact, I just finished my 1995 V6 dash swap. The LT1 and the V6 are the same, so you should be fine. Im gonna post all my connections soon.

 

thanks. were you able to hook up the fourth gen hvac controls? or are you using the thirdgen ones?

 

Nick (or anyone else that has done this)
I know U did this along time ago, but if U remember any of it please help me out. Iv'e never done any kind of wiring before.

Right now Im trying to match up the wiring. Ive got a 3rdgen shop manual but can't match up some of the wires on the guages.

What I quoted above are the wires from the 4thgen guage that I can't figure out what to do with.


SO what did you do with these wires?????????

#1) A1 and A5(4thgen) is power feed for the guages. I have 5 wires on my 3rdgen harness (pnk/blk) that say power feed for guages. Did you just hook two of the 3rdgen wires up and leave the the other 3 unhooked?

#2) A13 on 4thgen "Power feed from PWR ACCY Fuse 7" Did U use this wire? I can't seem to find a match on my 3rdgen harness?


#3) A14 on 4thgen "Generator output indicator control" Same thing, can't find a matching wire on the 3rdgen harness. What did U do with it?

#4) B1 "Odometer illumination" can't find a 3rdgen wire to match it?

#5) B2 "IP illumination lamps feed" I have 3 thirdgen wires that match this function, did you just connect all three together or use one and leave the other two unused?

#6) B3 circuit 650 "gound"
#7) B15 circuit 451 "Ground"
what did you do with these two grounds, cause they are differnt circuits on the 4thgen harness. But I have two grounds on my thirdgen harness but they are the same circuit. So do the circuits matter? Or can I connect either ground on the 4thgen side to either ground on the 3rdgen side?


The wires I have left over on the 3rdgen harness to play with are,
lt blue- Choke
5x pink/blk- battery voltage from guage fuse, hot in run
2x black- Ground
3x gray - cluster illum, variable voltage with lights on

 

Anyone? ABout my Question above????????

 

the gray illumination wire is usally hooked to dash lights, so when you turn your light switch ****, they will go dimmer and brighter accordinly

 

I have 3 of these gray wires on the 3rdgen harness. The 4thgen cluster calls for 1 IP illumination wire and 1 Odometer illumination wire. So would I just hook a gray wire to each and tape the 3rd gray (from the 3rdgen harness)wire off to the side and not use it? Again, I don't know much about wireing. just trying to make sure I do it right so I don't end up ruining anything. ThanX