I went to the Pick N Pull and got a Cluster out of a 88 Blazer with a tach built in. I had a good idea how to get it to work, but I needed a few more things to get it to work. I didnt want to have to convert my truck to a cable system, so I had to custom fit an electric speedometer into the cluster.
I had to get a circuit ribbon from a truck to get my idea to work.
Here is the 91 electric 'L' speedometer I had to pull to get my plan to work.
The cut-out I made from the circuit rubbon.
I attached the ribbon to the speedometer.
The speedometer installed into the 88 cluster.
Here you can see I had to custom wire the electric speedometer onto the 88 circuit ribbon.
I got the cluster in my truck, I think it looks awesome!
Here is a breakdown of the wiring job I did to make this work.
'92
1 Grey 12v (+) Gauge Lights
2 Pink blk 12v (+) Gauges: Volt, Fuel, Temp, Idiot Lights: Check Gauges, Battery, Upshift, Ebrake
3 Brown (-) Battery Light
4 Tan blk (-) Upshift
5 Tan wht (-) Ebrake
6 Green (D) Temp Gauge Input
7 2x Purple (+) Right Turn
8 Dark Purple (D) Fuel Gauge Input
9 Light Tan (D) Oil Gauge Input
10 ABS (not used)
11 Dark Green wht (-) Service Engine Soon
12 Pink blk (+) Gauges: Oil, Speed, Idiot Lights: ABS, Service Engine Soon, DRL
13 Light Green blk (-) DRL
14 Gray blk (D) Speed
15 Yellow (+) Seat Belt
16 White (+) High Beam
17 Black (-) Gauges: Oil, Speed, Gauge Lights, Idiot Lights: Left Turn, High Beams, Seat Belt
18 2x Light Blue (+) Left Turn
'88
1 (D) Fuel
2 (D) Oil
3 (+) Oil, Volt, Temp
4 (D) Temp
5 (+) Right Turn
6 (+) High Beam
7 (-) Battery
8 (-) EBrake
9 (-) Check Gauges
10 (-) Upshift
11 (-) Service Engine Soon
12 (+) Idiot Lights: Battery, Ebrake, Check Gauges, Upshift, Service Engine Soon
13 Not Used
14 (+) Gauge Lights
15 (+) Seat Belt
16 (-) Fuel, Oil, Volt, Temp, Idiot Lights: Right Turn, High Beam, Seat Belt, Left Turn
17 (+) Left Turn
18 (+) Fuel
Conversion:
88 - 92
01 - 08
02 - 09
03 - 02
04 - 06
05 - 07
06 - 16
07 - 03
08 - 05
09 - Couldnt Figure It Out
10 - 04
11 - 11
12 - 12
13 - 14 (i used the empty slot and soldered a wire to the speedometer input)
14 - 01
15 - 15
16 - 17
17 - 18
18 - 03 (spliced)