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2017 reverse lights wiring ?

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Old 02-01-2017, 09:06 PM
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Default 2017 reverse lights wiring ?

I'm looking for the reverse lamps wiring on my '17 Lariat F-150. I know it is GN-BN colored wiring. The diagrams show both L & R as green/brown and C487 (LEFT) and C488 (right) and splice at S405 and two connectors C405-2 and C316-22. I know this, but where is it physically located ? Is it in the wiring under the driver side door sill ? Or does it run under the truck to the front somewhere. Wanting to splice into it for manual operation when needed. Any help would be appreciated !
Old 02-02-2017, 11:19 PM
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No body knows ????????????????????
Old 02-03-2017, 07:52 AM
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Not sure how you plan on doing this but make sure you don't back feed the BCM. Don't know if these will help any:
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Old 02-03-2017, 09:13 AM
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If your looking to add additional lights to the rear while backing up, its very simple to tap into the trailer hitch wire harness. The wires are exposed right behind the rear bumper. This took me 15 minutes to install my backup lights & tap into the wire harness.
Old 02-03-2017, 09:16 AM
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Originally Posted by Stevenb913
If your looking to add additional lights to the rear while backing up, its very simple to tap into the trailer hitch wire harness. The wires are exposed right behind the rear bumper. This took me 15 minutes to install my backup lights & tap into the wire harness.
I did the same thing but it sounds to me like he wants to be able to manually operate the factory reverse lights.
Old 02-03-2017, 11:46 AM
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Originally Posted by robbieg
I did the same thing but it sounds to me like he wants to be able to manually operate the factory reverse lights.
Right, I want to be able to turn on manually with a switch. I already have the diode connectors:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Old 11-27-2018, 04:06 PM
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Originally Posted by Bandera
I'm looking for the reverse lamps wiring on my '17 Lariat F-150. I know it is GN-BN colored wiring. The diagrams show both L & R as green/brown and C487 (LEFT) and C488 (right) and splice at S405 and two connectors C405-2 and C316-22. I know this, but where is it physically located ? Is it in the wiring under the driver side door sill ? Or does it run under the truck to the front somewhere. Wanting to splice into it for manual operation when needed. Any help would be appreciated !
you said Lariat so I am assuming you have LED tail lights also. I’m attempting to hook up VLED’s new LED license plate bracket. Row of LED’s across the top.
I didn’t realize there is only one plug on back of tail light for all lights until I pulled light off. It does have a green/brown wire included in the 6 wires going into the plug. Any idea what color wire coming off of trailer hook up is designated for reverse lights?
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Old 11-27-2018, 04:18 PM
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Originally Posted by zeeya


you said Lariat so I am assuming you have LED tail lights also. I’m attempting to hook up VLED’s new LED license plate bracket. Row of LED’s across the top.
I didn’t realize there is only one plug on back of tail light for all lights until I pulled light off. It does have a green/brown wire included in the 6 wires going into the plug. Any idea what color wire coming off of trailer hook up is designated for reverse lights?
I don’t remember the color but the center pin is reverse on the plug if that helps.
Old 11-27-2018, 04:25 PM
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Originally Posted by zeeya
you said Lariat so I am assuming you have LED tail lights also. I’m attempting to hook up VLED’s new LED license plate bracket. Row of LED’s across the top.
I didn’t realize there is only one plug on back of tail light for all lights until I pulled light off. It does have a green/brown wire included in the 6 wires going into the plug. Any idea what color wire coming off of trailer hook up is designated for reverse lights?
When I installed a tailgate light bar to get supplemental backup lights, I bought this Curt adapter and put it inline between the truck and the 4 pin/7 pin connector. The two outside wires on the 5 pin connector are ground and reverse. I tied to them. You can tie to the reverse and ground pins from the trailer harness without triggering the trailer attached warning. It is the tail lights and brake/turn signals that trigger that.

CURT 56584 Custom Wiring Harness CURT 56584 Custom Wiring Harness


Last edited by rliles1; 11-27-2018 at 04:28 PM.
Old 11-28-2018, 04:57 AM
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I chickened out and checked the manual. On the back side of 7 way the white is the ground wire and green/brown like you mentioned is reverse.
Installed VLED's new license plate light bar (not sure of exact name), but mounts across top of your license plate. I have what looks like the same lights mounted in the exact same spot as Steve above and use them on a manual switch. I wanted these to work with reverse lights.


I don't get the glare on back up camera like I do from the ones mounted under the bumper.

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