Im transplanting a ls1 dashing another car And I cant get the dash odometer to light up It worked once now wont again I have the 2 grounds the purple and white and the orange hooked up am i missing something?

The speedo and tach max out and return and the volts read but the odom doesnt or any other lights

 

You need to hook up the grey wire, pin B9 on the pigtail to a 12 volt source. I wired mine direct to ignition so its lit all the time.

 

You take that Gray wire and hook it into the Headlight Switch..that way when you pull the Markers it lights up the Gauges.

 

I mean the actual numbers of the odometer