Tail gate idiot light
Fleet Mechanic
Joined: Jul 2019
Posts: 1,643
Likes: 688
I can't see the tailgate in my rear view mirror. The tonneau cover blocks it from view.
Laughing Gas
Joined: Sep 2017
Posts: 895
Likes: 325
I noticed than on the upper trims (not sure about lower) of the Chevrolet/GMC, you do get a message in the DIC stating that the tailgate is open. On the ones with the multi-pro/flex, it says that inner tailgate is open as well. I, too, have a tonneau cover and don't see the tailgate with cover closed. Well, unless I use camera view and see the bumper! 
Cargo Master
Joined: Feb 2017
Posts: 2,423
Likes: 722
From: Wisconsin
I made my own. I bought the led light from NAPA and it included a nice grommet. Its in the factory location and I wired it to an upfitter switch. It comes in handy to illuminate my trailer ball hook up in the dark.
Disregard my post, I miss read what you were looking for.
Disregard my post, I miss read what you were looking for.
Last edited by jimzpsd; Jun 8, 2022 at 09:48 AM. Reason: misread
Mountain Pass
Joined: Mar 2002
Posts: 129
Likes: 49
Hit the camera button to see the rear view camera?
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Cross-Country
Joined: Nov 2012
Posts: 72
Likes: 7
From: Havelock, NC
not a bad suggestion, but doesn’t work in motion. With the prevalence of truck tailgates opening on their own, this is a reasonable concern. I’m about to do the recon and see if I have the wiring necessary to add the tailgate ajar notification to the dash.
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Fleet Mechanic
Joined: May 2018
Posts: 1,765
Likes: 502
Simple way would be an LED with a door contact switch at the tailgate. When closed, the circuit is open so the light is off. When open, circuit closes, LED comes on, letting you know the tailgate is open. You could get clever with a relay and make it so the system turns off with the ignition also.
Tuned
Joined: Nov 2016
Posts: 308
Likes: 14
that's exactly what it does. You will also need to fix the box and replace the tailgate if it comes down while towing.
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Rusty_S
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
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Aug 26, 2015 08:51 PM