..if I hook up a 12v 75w incandescent flood light to the reverse light wiring?

I already have the flood light. A tree branch caused it to break off my excavator. I already built a bracket, and figured out where to mount it under the rear bumper.

Will the factory OEM ford reverse light wiring handle this much of a load?

Trying to figure out if I can simply tap into the existing wiring for reverse lights.

Or if I'll need to run a direct wire from the battery and use a relay.

I need to get this done properly. I don't have time to melt wires and have to replace all kinds of stuff.

75 watts is a lot. It's a bright incandescent flood light.

Thanks and please help

 

Just wire it to an upfitter switch, I have 3 extra backup lights but use them when the truck is in park after backing up for hooking up trailers and working after dark on the job site. I would think the backup circuit would think the backup circuit would handle some xtra amperage but the best thing to do is hookup the light to the battery and check the amperage draw first. If you fuse the circuit properly ( at the point of hookup ) and size the wire correctly it should be fine. If you are going to run a long circuit upsize the gauge of wire a bit. I have two double incadescent 60 watt lights (120 watts each)and a 12" led light bar on the #2 upfitter switch and it works fine, but I ran a 10 guage wire to the back.

 

Follow those words of advice above and you'll be fine and you can be always power off of a separate relay as well an turn it off and on from the upfitter switch.

 

A 75W light is only going to pul a bit over 6 amps. 14 ga wire is fine.

Of course, it would help if you told us what year your truck is so that the diagrams might be checked.

 

I agree the wire will handle it. I don't know what year you have, but my 2008 has a 20A relay circuit for backup lights. Should be more than adequate for that 75 watt bulb.

 

It's a 2002 F350. If the wire will handle it, great. It will be a simple install procedure.

If the wire won't handle it, I'll need to run a new wire and fuse it with a relay.