Looks like these work well. I was going with the small waterproof LED option but not happy with the amount of light (not to mention wiring them all up). Going to get a couple sets of these for front and rear. Thinking that I can run with a single switch is I wire a relay from direct battery power and the switch simply turns on the rely. You guys with more electrical experience, any idea what size/type rely would be appropriate to do it this way?
Looks like these work well. I was going with the small waterproof LED option but not happy with the amount of light (not to mention wiring them all up). Going to get a couple sets of these for front and rear. Thinking that I can run with a single switch if I wire a relay from direct battery power and the switch simply turns on the rely, yes/no?
This is what I was thinking:
View attachment 40429
You guys with more electrical experience, any idea what size/type rely would be appropriate to do it this way?
It depends on your total combined wattage of the lights. The formula is: P (power or watts) divided by volts = amps (current).
If you have 4 lights each drawing 25 watts take 100 (total watts) and divide by your volts (12v) = 8.3 amps. I would factor in a "continuous duty" rating as well, meaning size up the relay so as to not max it out causing early failure. If 8.3 amps will be the total load, then I would go with a 15amp relay.
As to the type, there are a lot out there. I would search 12v automotive control relays, and look for one that will be condusive to your preferred mounting and wiring method. Some, the wire can be easily terminated with just a set screw while others will require ring/fork terminals to connect wiring. I would go with rings myself because the wire cannot come off unless the screw falls completly out. Someone on here probably can reccomend a specific relay they like.
I know this is an older thread (but still very useful) so I'm sorry for the bump cause I needed some clarification. Based on the math here, if I did four of these Walmart lights I'd need a 15 amp relay but do you need a relay to do all 4 or could you just put all four positives together to a switch, the switch grounded, and a positive to the battery with a 15 amp in line fuse? I need to clean up/redo all the wiring I've currently done to my Jeep (wannabe Dually's and CB) so I'm figuring, why not throw a set of rock lights under her in the process![]()
Did anyone else have any issue with the red wire being to short to go from the batter to the center console; and for the black ground wire being too short to be grounded a extend to the center console?
that is what i am going to do today. But i was just wondering if anyone else had this issue or if the wires they received with the kit were long enough.Just add another more wire lol!
that is what i am going to do today. But i was just wondering if anyone else had this issue or if the wires they received with the kit were long enough.
suprised that yours even came with some most lights just come with small 3 or 4 inch leads! no biggy just splice some in and boom done!
Awesome, I can't wait to see what you come up with :thumb: