extra reverse light
#1
extra reverse light
I have some cheap auto zone ones on now was lookin to step up to these do u guys got any ideas on wiring them up the ones I have now are tapped into the reverse lights these ones in the pic are suppost to draw about 1.9A at 12V
#3
Senior Member
Well at 27 watts, I'm getting roughly 2.25A draw when calculating it (@ 12 volts). If you have 2 of those lights, 4 amps (even at 1.9A) could be quite an addition to your reverse lights circuit. I'd run them off of a separate relay direct from the battery. Remember to fuse it at the battery as well if you do that (in case wire gets pinched, etc). Just my opinion, you may end up blowing fuses for your actual reverse lights if you tie directly in. I just think for that much additional power, it's a pain to run the extra wire but better to do so. Does this make sense?
#4
Well at 27 watts, I'm getting roughly 2.25A draw when calculating it (@ 12 volts). If you have 2 of those lights, 4 amps (even at 1.9A) could be quite an addition to your reverse lights circuit. I'd run them off of a separate relay direct from the battery. Remember to fuse it at the battery as well if you do that (in case wire gets pinched, etc). Just my opinion, you may end up blowing fuses for your actual reverse lights if you tie directly in. I just think for that much additional power, it's a pain to run the extra wire but better to do so. Does this make sense?
#5
Senior Member
easy . I can't remember the reverse wire color off of the top of my head, I'll have to look it up. I wired my backup camera off of it haha.
So, you run a fused positive from your battery to the rear of the truck. Hook that positive to the relay - if using standard bosch relay, pin 30. Hook reverse light wire up to pin 85, hook up ground to pin 86... hook up positive of reverse lights to pin 87 (87a is off position if your relay has it), hook up ground of reverse lights to ground. Does that sort of make sense?
So, you run a fused positive from your battery to the rear of the truck. Hook that positive to the relay - if using standard bosch relay, pin 30. Hook reverse light wire up to pin 85, hook up ground to pin 86... hook up positive of reverse lights to pin 87 (87a is off position if your relay has it), hook up ground of reverse lights to ground. Does that sort of make sense?
#6
Im running some cree leds that are well priced and durable. I prefer runing my aftermarket lights to a switch. But if you want to have them turn on with your reverse lights. Its vary easy there are only two wires going to your reverse bulb there is a all black one and a black one with a stripe on it, just tap your extra light's power wire(red) into the striped one. Then ground the lights.
#7
Senior Member
Try this picture I drew you (I'm no artist).
*** Remember, FUSE as close to the battery as you can (in case of accident, short anywhere, etc). And (I have to say this to be safe ), ALWAYS disconnect the negative - off of the battery first. If you hit ANYTHING metal while unbolting that positive cable you could blow the battery up or weld your ratched/wrench, etc... as the truck body/chassis is grounded of course.
Put the relay close to the back as it'll be easier to wire. You can get a relay usually around $5-10 at any automotive store. If the relay says to use a specific pin for ground (85 or 86), make sure you use that pin for ground other than what I drew you (swap pin 85 and 86). The reason being is it may have a quenching diode on it. The relays I've purchased for automotive don't usually have that though. I add it for more sensitive electronics but you'll be fine with this.
The reverse lamp wire color is Black/Pink for the positive. Find a good bolt for that chassis ground and put the wires to it. You could use the negative from the reverse lights if you have to (black wire).
Again, you could try wiring direct off of the reverse lights wires... but at 4-5 amp draw, you might be pushing it. I see backup lamps are on Fuse 14 (10 amps) with ABS, EC Mirror, Daytime running lights (Canada only), heated PCV (5.4), reverse park aid... Worst-case you'll be blowing fuses from overload (and no, you shouldn't upgrade the fuse lol). You can always try it, you may get away
*** Remember, FUSE as close to the battery as you can (in case of accident, short anywhere, etc). And (I have to say this to be safe ), ALWAYS disconnect the negative - off of the battery first. If you hit ANYTHING metal while unbolting that positive cable you could blow the battery up or weld your ratched/wrench, etc... as the truck body/chassis is grounded of course.
Put the relay close to the back as it'll be easier to wire. You can get a relay usually around $5-10 at any automotive store. If the relay says to use a specific pin for ground (85 or 86), make sure you use that pin for ground other than what I drew you (swap pin 85 and 86). The reason being is it may have a quenching diode on it. The relays I've purchased for automotive don't usually have that though. I add it for more sensitive electronics but you'll be fine with this.
The reverse lamp wire color is Black/Pink for the positive. Find a good bolt for that chassis ground and put the wires to it. You could use the negative from the reverse lights if you have to (black wire).
Again, you could try wiring direct off of the reverse lights wires... but at 4-5 amp draw, you might be pushing it. I see backup lamps are on Fuse 14 (10 amps) with ABS, EC Mirror, Daytime running lights (Canada only), heated PCV (5.4), reverse park aid... Worst-case you'll be blowing fuses from overload (and no, you shouldn't upgrade the fuse lol). You can always try it, you may get away
Last edited by homer; 01-27-2014 at 02:08 PM.