Digital Dash (no-go)

[GPChief]

Today I tried to install a digital dash into my TSTE. It worked but with issues. I took it back out due to these issues.

The issues were:
Once installed some mysterious stuttering / stumbling happened with the motor.
Could not see the MPH when lights were off.  Once lights were turned on you could see it fine. (note I upgraded all dash lights to LED hoping to solve this issue).

Guess I'll be installing a HUD...........eventually.

[stockgp]

not to insult your intelligence, but you did check to see if the wiring was the same between the two, right?

i remember i swapped a digital cluster into my first gp, and the speedo did not light up without the lights on.  leads me to believe the illumination wiring is different

[NTRCOOL]

It's strange that the motor was stumbling after you put the cluster in. Aside from that issue was thinking about running a jumper wire to supply power for the speedo for when the lights are off. I wonder if there is a schematic in a manual that would help make a safe jump for that cluster?? I could ask the W-body guys or Have you joined GMforum yet I coud ask them as well.