Electrical help

[IISPEEDYII]

So I know nothing about the capacity of the Hummers alternator and battery (stock) but do you guys think that I would be able to run 4- 42 watt lights along with 2-55 watt lights? or would that be too much for the battery and alternator? Im probably asking a dumb question but better to be safe than sorry!

 

[digglesworth]

I think theres people that run that many... I would consider how you're setting them up... All forwards? A set backwards? Will they all be on at the same time? There may be a flicker at idle if they're pushing things a little too hard but may be a little less of a strain with some rpms... One thing to consider is LEDs... They draw way less... They are a little more expensive though.

 

[digglesworth]

Watts/volts gives you amps. Add up all your lights and divide the sum by 12v... That'll tell you how many extra amps your adding to the system. I'm getting just over 23 amps. I think that'd be ok...

 

[Best4x4]

Just as long as you run the lights off a 12V 30amp relay you should be fine. I've ran more lights on a Jeep TJ/LJ with a smaller alternator vs an H3 and I never had any issues.

LED lights are great, but the 800.00 JW Speaker 8700 Headlights I run on my LJ flicker like mad when using the winch vs dimming like the OEM halogen headlights and it makes winching in the dark more like being at a club lol. Great lights for driving, but they aren't perfect.

 

[IISPEEDYII]

Yeah the 4- 42 watt ones are round LEDs that I'm going to be putting on the roof and the other two are PIAA lights that I want to put on the brush guard. They're all going to be facing forward, I wouldn't be putting any more lighting on the rig after these.

I guess I'll have to figure it out when I wire them, because I'm using two switches, one for the front and one for the roof.

 

[Best4x4]

I'd run a relay for the PIAA's and a relay for the roof lights and you should be good to go.

 

[IISPEEDYII]

I'd run a relay for the PIAA's and a relay for the roof lights and you should be good to go.

Thank you! Looks like I've got a project to get to