Which wire provides dimmable dash light power? (05)

[DFrank]

I am running some aux switches for some off road lights. The lights have their own illumination, and I'd like to tie it in to the dimmable dash light circuit.

I could not find a fuse label that seems to go to that circuit, but I'd rather tap into the right wire in the steering column area to keep it all in the cab.

Anyone know the tracer color or suggest how to determine the right wire?

Also, we tried to run one of the switches to be: off, on with brights, and simply on.

We tapped into the bright wire, right out near the bulb. The system almost works as desired, except in the on position, the power to the drivers, lights up the one bright.

My 17 year old son, who is the main impetus for this upgrade, thinks we need a diode somewhere in the system to avoid this.

Thanks in advance,

Dave

 

[Timd32]

(Edit...If these are switched HOT wires),, it makes sense that in the "ON" position you are seeing the brights "ON", A diode could work off the brite wire so that you only send voltage out and it blocks the voltage from the "ON" switch side of this mod.

Without a FSM, may be able to checkout the rambodybuilder site to see if they have some info on some of these circuits, it is used for upfitters to make additions and changes.

 

[Joseph Donnelly]

For my auxiliary gauges on my 2004, I tapped into a wire at the connector to the headlight/dimmer switch.

 

[PWong]

http://www.rambodybuilder.com/2005sbbgl/docs/wd/dr/wiringdiagrams/8w50frontlighting.pdf

Diagram of interest: 8W-50-5
Circuit of interest: E19 (OR/BR) panels lamp dimmer signal from Cluster to Panel Lamp.