View Full Version : Chevy 2500HD Aux Light Switch

12-19-2005, 08:38 PM
Guys, My 2500 hd extended cab 2002 has an aux lights switch in the dash. I hear a relay clicking in the back by the drivers side rear seat. I've heard that there is a wireing harness under the headliner for the aux light switch...
Before I go ripping out the interior of my truck looking for this I want to be sure....

12-03-2006, 10:09 PM
you are 100% correct. I have a 2002 2500HD and this fall I just put back-up lights hooked up to the switch. You have to pull the head liner down a little but not all the way. There are several screws and clips that you have to take off. I think it it held up by Velcro if I remember right too. You should find the two wires up there. It's hard to see them if you just take it down a little ways but you might be able to feel it with you hand or fish it out. If you take out the back break light on the top of the cab you can pull the wire out though there.

Total Landscape Solutions
12-03-2006, 11:22 PM

What kind or type of lights did you use?
My F550 will be ready in Feb. of 07 and I am going to install some back-up lights. The Fords have 4 aux switches built into the dash. The first two are rated at 30 amps. I am going to tap switch #1 and install a set (2) of these


What do you think?

12-04-2006, 11:47 AM
those look nice. I have just tractor lights. They are either 35w or 55w. You can get them from an auto store, harbor freight, or tractor supply. Just watch out for anything metal that could rust. I have some chrome ones on my f150 that rusted. Here is a pic of the lights. There are 4 of them and they are mounted on a back rack. If you are trying to find out how many amps they will draw you can use this formula.

Watts = Voltages x Current
55w=12v x Current
Current = 4.58A

for that example each 55w light would draw 4.58 amps. So 4 lights would draw 18.32 Amps.

12-04-2006, 11:50 AM
another picture

12-04-2006, 11:51 AM
last picture

12-04-2006, 12:13 PM
is that during the day or night i cant tell they are so bright....i need some

Total Landscape Solutions
12-04-2006, 01:09 PM
Yea I knew they were going to need some power.

I am going to run some 10/2 marine grade wire to them and replace all metal parts with stainless steel.

I think at 220 total watts it'll be bright enough back there.