It would go to the dimmer that controls the brightness of the dash lights.
A thicker wire can have lower resistance, which allows more current to flow without voltage dropping. This can cause the light to appear dimmer if the current passing through the bulb decreases.
how do you go around amp for after market radio on 1995 ford probe
To install a 3-way dimmer switch in your home, first turn off the power to the circuit at the breaker box. Remove the existing switch and identify the common wire. Connect the common wire to the common terminal on the dimmer switch. Connect the other two wires to the remaining terminals on the dimmer switch. Secure the switch in place and turn the power back on to test the dimmer.
If the dashboard dimmer switch works with the other dash lights, the fault is in the radio unit itself.
Go to www.installdr.com .
The 2nd yellow wire goes to power, (usually a thicker red wire)
You need to go to a sound shop and buy an adapter that will allow your radio to be plugged into the car's wiring harness. You will also need to ask them which ground wire to cut, so you don't blow out the dimmer switch for your dash lights.
go to www.the12volt.com
sounds like you need a new dimmer switch, or there is a loose wire
You have to go purchase an aftermarket wiring harness. that will plug into the factory harness then you can wire it to the aftermarket radio.
go to wall mart buy a after market harness and a wire crimp set remove old radio conect new harness to existing old one and crimp all the same color wires from the new harnes to the new radio its easy
The instruments light dim for night driving when the headlights are turned on. Check to insure that your dash dimmer switch is on high. If it is, then you have a problem with either the dimmer switch or the wiring.