2012 f350

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Dec 17, 2012 | 06:39 PM

vicentegarcia

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2012 f350

Bought a new f350 lariat. I wired in some extra back up lights and mounted them on top of the bumper. We tied them into the stock back up lights. Everything works fine when the truck is off but key is on and truck in reverse. Once the truck engine is running, the lights will flash on, and then turn off untill you turn the truck off and start over.

Any one know how to make this work? I tried to search on here to no avail.

Thanks!

Dec 17, 2012 | 07:45 PM

redford

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From: Stephensville WI

Hello vicentegarcia and welcome to FTE.

Tell us how you went about wiring in the new backup lights.

Dec 17, 2012 | 09:24 PM

PSDlongbox

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might I suggest pulling the power for the backup lights from somewhere dedicated, and using a relay tied to the backup lights to trigger them.

Dec 18, 2012 | 12:20 AM

mrcllusb

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Sounds like too much current draw.Like PSD stated i would install a relay and use the reverse light circuit as the relay trigger and pull 12v for your lights from the battery.

Dec 18, 2012 | 12:20 AM

biz4two

Lead Driver

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From: Albuquerque

Do the truck backup lights flash off too? Or just the lights installed?

IMHO...I'd run the connection to the RV 7-pin. I'm not certain which color wire is the backup, but the center pole ( #7-pin) is for Back up lights or Aux.

Just trace the center out the back...and you'll have your back up light power.

Hope this helps...

biz

Dec 18, 2012 | 01:30 AM

AlaskanEx

Bleed Ford Blue

Joined: Apr 2009

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From: Anchorage Alaska

always pull from the 7 way trailer plug. it is fused and meant for a larger load.

Dec 18, 2012 | 05:26 AM

SteveC7010

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From: Northville, NY

Quote:

Originally Posted by vicentegarcia

If you tapped the hot lead for the reverse lights directly, you are placing too much current draw on the circuit. I suspect the PCM senses the extra amperage and shuts down the circuit until you reset it by turning the truck off and back on.

As a previous poster suggested, instead tap the reverse wire that feeds the 7-pin trailer connector. It is fused for the extra load and isn't subject to the PCM's direct control.

The center pin of the 7-pin trailer connector should be reverse. Test it with a meter or probe to be sure. The wire color is GY-BN.

Ground wire color is WH and it is Pin #2 in this schematic: