Have a 2005 XL basic truck, w/ Parking & Fog lights but w/o auto headlights. I Bought a Switch with the auto headlight feature and the correct plug configuration. The switch has an open pin #5 for which my harness has no wire feeding it. All the switch settings work expect for the Auto setting. Does anyone know where that wire comes from or where it attaches? Also, there is no light sensor or wiring installed in this truck. If I put a sensor on the dash where would the wires attach? I have a manual A/C switch and believe from what I have read that no dealer cluster program is needed. Is this correct? Any experienced help will be much appreciated.

 

seems like it would be easier just to flip the switch to on...

 

Ur right, that's the easy way out. However, the challenge is to discover a simple wiring solution. Thanks for your input.

 

The sensor has to provide power...probably to the #5 pin thats empty..good luck.

 

Pretty sure you need a new gem module too not 100% though, goodluck!

 

Just buy a universal light sensor with a +12v out

 

Thanks, that is probably the best solution..

 

No problem. Just have to think a little out of the box. Let me know if it works I would love to give this a try. I have an XL as well.

 

...not sure there's an "easy" wiring solution. The sunload (dash) sensor does play a part- that also ties into the auto style AC system, GEM, and maybe more.

 

I understand..I'll just place the light switch in the Auto mode and hook up 12v to the #5 pin and see what happens. I was looking at a wiring diagram and one line runs from the light switch which goes to a sealed control relay box behind the seat on the back wall. But I can't figure out were I would connect a wire from the light sensor. However, In my opinion, I don't think you would actually need a light sensor because all that does is control the voltage to the switch. It's either on or off. I may be wrong so if you have any other suggests please pipe in.
Thanks,