Mar-03-2020 12:58 PM
Mar-10-2020 10:16 AM
wnjj wrote:
The box probably has relays inside and from what I’m reading online, it’s possible that 2019 and newer GM trucks may be sending PWM (pulse width modulated) signals on the lighting circuits. That would cause all kinds of havoc with relays connected to the line.
There are people having issues with backup cameras powered from the running lights.
You may have to replace the box with a solid state equivalent.
Mar-10-2020 10:12 AM
Mar-10-2020 08:40 AM
steelshooter wrote:
Doug, Was able to find the box causing the buzzing. Looks like something you were refrencing. The box does split the stop and emergency lights to make the 3rd stop light work. I dont really know why it is there, I am not seeing it on new campers.It doesnt look like GM is going to be able to tell me what was done to cause this to happen with the new truck. I am either going to have to put up with it or rewire the lights on the camper.Thank you for responding. Larry
Mar-10-2020 06:06 AM
Mar-09-2020 09:45 AM
Mar-09-2020 09:14 AM
Mar-09-2020 09:10 AM
steelshooter wrote:I'd check the voltage at the lights. Plus apply 12V (not the GMC brake wire) to the cord. Do you have the noise?
Doug, There is an LED Stop light bar installed. It may not be factory but the back cap has an indentation for the light bar to recess into the cap. The response to the diode splitter sounds like what is actually happening. The noise seems to be located half way between the stop light bar and the right tail light. I believe it is in the cavity between the cap and the frame, thus I can not see from inside the camper or from under the trailer when I drop the belly cover. You are also correct about checking the system before we travel. Also if pyoung47 were to hear this in a campground he would hear it every time I put it into hit the brake to park the camper. It is actually that obnoxious.
Mar-09-2020 08:24 AM
Mar-08-2020 07:08 AM
pyoung47 wrote:
I think I can speak for the majority in saying I haven’t been inside the camper when the brakes were applied.
Mar-07-2020 06:39 PM
Mar-07-2020 03:07 PM
Mar-07-2020 12:03 PM
Mar-04-2020 05:19 AM
Mar-04-2020 05:16 AM