Gauge lights don't work after installing stereo.

[Boulky12]

Need some help fellas. I installed my stereo using one of those harness adapters from ebay. I didnt leave exposed wires and stereo sounds great. At first my running lights and dash lights didnt work, but headlights did. I checked the fuses. Found the PARK LPS 20 amp fuse was blown. Replaced it and running lights now work. The rest of the fuses were fine but i went ahead and replaced the gauges fuse, and still no gauge lights.

Any thoughts? I'd appreciate the help.

Truck is a 1990 1500 swb 5.7 tbi.

Thanks.

 

[Chris Rogers]

Check that they didn't ground the light wire. Common issue.
if you have no dash lights you also have no tail lights.

 

[Chris Rogers]

Also dumb as it sounds. Dimmer position?