Wiring driving lights

Discussion in 'GM Electrical Tech' started by Als09Sierra, Mar 27, 2010.

  1. Als09Sierra

    Als09Sierra New Member

    Has anyone posted a thread on wiring driving or fog lights? I am not electrically inclined but would like to install my new PIAAs myself.
    Last edited: Mar 28, 2010
  2. TRPLXL2

    TRPLXL2 New Member

    I can't tell from your pictures in your album, what type of PIAA lights did you get? They look like the SMR's or maybe the 510 series, the only one's I have installed are the 520's and they were easy to install. Mine came with a pre-termintaed wiring harness, which I hooked the + cables to the top post of the battery, and I hooked the - to the other top post. PIAA recommends hooking the grounds onto the - post, versus grounding it on the chassis or somewhere else. The switch for inside the cab needs one of the wires to be grounded, and then one of them is neutral and another one is hot. When wired correctly the LED on the switch will stay on green, and then your good to go!

    I wish I would have taken pictures of when I installed mine, but I didn't really think there was enough there to show anything. Good luck with your install!
  3. Als09Sierra

    Als09Sierra New Member

    I have the 540s, and I thought you aren't supposed to wire direct to the battery. I also thought they had to tie into the headlight power. I'll double-check the instructions to see what it says. Maybe I'm over-thinking this.
  4. murdog94

    murdog94 New Member

    I think you might be you should be able to wire them into the fuse panel (i hope there are a few blank spots still left) rather than directly to the battery that will also allow you to install an aftermarket switch to operate them... Plus less stuff hooked up to your battery...
  5. Als09Sierra

    Als09Sierra New Member

    Just checked the instructions and I am an idiot. The lights are powered direct from the battery and the switch has to tie into the headlights (high-beams supposedly). Maybe I should've paid for the install, but I like to learn. Thanks for the reply. I appreciate your help. :glasses:
  6. murdog94

    murdog94 New Member

    hmm lesson learned on my part...
  7. Als09Sierra

    Als09Sierra New Member

    There are spots open in the fuse box, but the harness includes a fuse that won't fit. Plus, I'm not sure of my ability to wire to the fuse box. Could I wire direct to the fog lights, or is that too much going through one fuse? That way I could turn them on with the fogs without the need of wiring the cheesy PIAA switch.
  8. murdog94

    murdog94 New Member

    Im not to sure that might be quite a draw for that system.. You dont want to have to worry about burning wires anyhow...
    I guess id just wire per instructions and look into getting a nicer switch... That should make it s a bit more simple if something were to go out.
  9. TRPLXL2

    TRPLXL2 New Member

    DO NOT WIRE THOSE INTO THE FACTORY SWITCH!!!!!!!!!!!!!!! :gasp:

    I speak from experience on this one, I tried to wire my PIAA's into the factory fog light switch and it melted the switch and the wiring behind it! Also another reason I wired it directly to the battery was because of warranty issues, your truck being brand new you will learn that lesson as well. The dealer doesn't care about extra lights, as long as you don't splice the factory wires. As soon as you splice into that high beam wire your done, just cross your fingers that nothing electrical ever happens to your truck. I know the wires on the battery looks like a$$, but it's the safest way to do it. And yeah that PIAA switch does suck, but if you open it up and look inside it actually has a circuit board in it. I never attempted to swap the switches on mine, mainly because I wasn't sure what that circuit board was for.
  10. murdog94

    murdog94 New Member

    and there is your answer.....
  11. TRPLXL2

    TRPLXL2 New Member

    To give you an idea??

    Here is what my battery looked like with all of my lights, I made it look as good as possible in my situation. Now keep in mind this was for 10 6" off-road lights with relays and fuses, wireloom covers up the over 30 wires going to that battery! I ran this setup for 4 years with no problem, never fried anything and I was happy!

    [​IMG]

    Here is a front view of all of the lighting wiring, when I finished running the wires I took it to the Chevy dealer to show them how I didn't splice any wires and they didn't have a problem with them as a matter of fact they gave me a compliment on not hacking the wiring. BTW- That brass thing on the positive terminal was a quick disconnect for my lights, when It would go into storage I would just turn that and I would be all good. It keeps you from having to pull every wire off the battery.

    [​IMG]

    Just so you don't think I'm full of shi$@, all PIAA lights at a total amperage of 560 amps on stock alternator and everstart wal-mart battery.

    [​IMG]

    I almost forgot to ask you, did your lights come with the relays in the little black boxes like in my first picture? If so those are supposed to be mounted no further than 12" from the battery or source of power, which Is why I mounted mine on top of the fuse box. They get super hot and will melt plastic which Is why I mounted mine on a sheet of stainless steel, just trying to keep you from causing any damage to your truck.
    Last edited: Mar 28, 2010
  12. murdog94

    murdog94 New Member

    That looks really good.. I like things to be that clean. Makes identifying things easier when something goes wrong...
    Last edited: Mar 28, 2010
  13. Als09Sierra

    Als09Sierra New Member

    Thank you both for your help. I'm feeling much better about this now. I will update you on my progress...as soon as the rain lets up and I have time to wire it up.
  14. Als09Sierra

    Als09Sierra New Member

    Thanks for the pics, nice setup. I won't have nearly as many wires coming off my battery, but I like the way you set it up. The relay from PIAA is slightly different and the instructions don't mention anything about distance to the battery, but I will probably be mounting within a foot or so.

    Nice truck!
  15. murdog94

    murdog94 New Member

    Hey make sure you post some pics once you get them installed to give us an update...

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