New truck, led backup lights?

Been a long while since I've posted. Got a new truck today. Went to install some knock off ridgid looking lights under the bumper to toss out some light when I'm backing up. Tried wiring them to the reverse bulb in the taillight and the truck picks up on the voltage and won't send power.

I then read on some forums that the middle wire in the towing 7 pin is the wire for auxiliary lights for your trailer. Spliced into that and still nothing.

The older trucks were easier to work on with less safety features and computers.

What's going on here?

My truck is a 2016 I'm trying to do the same thing in this photo but to my 2016.

 

Thats right, hot on the center pin of the 7 pin towing plug in reverse.

What color wires do you have
on those knock off back ups?

If it's black and white the white is ground on led and black is +

Good clean ground where you
mounted them?

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Didn't Chris have this problem too?
Did you use a relay from the reverse wire to trigger the lights?

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I know on my friends 2012
F350, I made a 7 pin trailer
plug for his Ranger bass
boat it has back up dock ramp
lights and we never needed a relay
to turn on three backup
lights at the rear of that trailer
using the center pin only.

I'm thinking it's a ground issue.

How bout it @Dawgfan54?

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Just doesn't make sense, 7 pin trailer plug on newer 2012
and up F150's need relays to turn on led lights?

Many newer trailers have led lights as the factory option.
Ford engineers want their customers to have 7 relays on a
trailer plug to transfer power to the 7 different functions
needed by a trailer ???

Edit: 6 excluding ground.

 

weather turned rainy and cold, haven't checked the ground yet. The led lights have red and black wires and I've used them before on the old truck. The location for the ground that I used was the bolt with an existing grounded wire so I'm fairly certain the connection is sound. The coloring on the trailer pin for me has a grey wire with a purple streak down it.

 

I'm seeing blue with a white
stripe is reverse lights that
goes to the factory bulbs.

If you probe the gray with
purple trace while truck is
Scotch blocked on tires,
parking brake on, key on
in reverse with a led type
tester not a test light bulb,
are you getting power?

Checked the fuse for that backup circuit?

You may end up using a relay
Triggered by this backup wire,
There should be a constant battery
Hot in that 7 pin for charging an
RV battery.



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I still think it ridiculous
One needs a relay to transfer power from a 7 pin trailer plug wiring to run additional lighting.

Normally one just plugs in
even a huge horse trailer
lit up like the 4th of July
no problem.

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Forget the lights let see pics of this "new" truck

 

LOL

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