I am new to the forum. I recently a 2008 Access Cab, so nice. I just installed my new Alpine IDA-x100 in it with aftermarket speakers. Everything went well, until I realized that the dimmer knob didn't work for the gauges and the gauge lights went out when i turned on the headlights.
Everything else works: the dimmer works for the A/C lights, whether or not the headlights are on. The dash gauges are on when the lights are off, but i cannot adjust the dimmer. When I turn on the lights the dash gauges turn off, but the A/c lights turn on and can still be adjusted with the dimmer.
I did connect the three orange wires together.
What should i do?