Thank you for detailing your considerable efforts to troubleshoot the trailer lighting malfunctions you are experiencing with your 2001 Pontiac Montana equipped with Curt Tail Light Converter # C55355.
Since you have tested the trailer with other vehicles and it has worked properly then the trailer would seem to have been eliminated as the source of the problem. Still, I suggest you check your trailer manual to confirm how much current is drawn by its lights. Curt T-Connector Harness #... view full answer...
The first place I recommend checking is making sure the ground connection is good on the wiring harness, vehicle, trailer and all grounding connection points. Many wiring problems are caused by a bad or insufficient ground. The wiring harness # C55560 is grounded to the vehicle and this wire is white. Additional problems could also be caused by dirty or corroded connections. Examine the front and back sides of the vehicle and trailer side connectors for any dirt or corrosion and clean it... view full answer...
Your trailer light functioning sporadically and the lack of function at other times leads me to believe there is a power issue. It sounds like there is a ground connection issue, but it could also be that there is a power supply issue. I recommend testing your wiring using an incandescent circuit tester like # PTW2993. Some testers will utilize LED lights that don't draw the same power as incandescent bulbs so they may give you a false reading on power. Double check the ground on your... view full answer...
the issue that you are having could be the result of a bad ground connection that the wiring harness for the 2002 Pontiac Grand Am cannot overcome, but the one on the truck can.
Since vehicle manufacturers can use any wire color, they want for any function I cannot tell you which wire colors were used on your specific model. So, what we will have to do is test the wiring using a circuit tester such as # PTW2993.
Once you have determined the wire functions you can make the connections... view full answer...
Since the trailer lights work fine on a different vehicle, I would start looking at the trailer connector on the 2001 Pontiac Montana. If there is any corrosion build up inside the connector, then that can cause a poor connection and cause the issue you are describing.
If the vehicle side connector is cleaned out, you can go on to testing the converter itself. Start by testing the wiring going into the converter from the vehicle using a circuit tester like # PTW2993 if needed. If the wiring... view full answer...
With the voltages being at 0 going into the unit, it sounds like there is either a bad fuse for those functions or the module has gone bad. If you check the wires going into the module with a circuit tester like # PTW2993 and get function, but don't get function on the output side, then that will confirm the module is bad. Since it has worked so well for so long, I recommend the replacement of the same Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 55057.... view full answer...
What dolly do you have that sways when unloaded? If it's a Demco you'll need to insert the pin that defeats the auto steer feature that allows the dolly to track behind the tow vehicle better. view full answer...
It sounds like you might have tapped into the wrong wire beneath the brake pedal in your Pontiac Montana SV6. The red wire from the brake controller needs to be spliced into the cold side of the brake light switch on the vehicle, which is a wire that only receives power when the brake pedal is depressed, and none when any other function is activated. The wire you currently have the red wire connected to may be a shared turn signal/brake circuit, which is why the brakes are pulsating with... view full answer...
Assuming the rest of the brake controller # 5504 is wired properly, the blue brake switch wire should be sufficient to tell the brake controller that the brakes have been pressed. My thinking is that you need to adjust the power output on the brake controller. If the output control is set too low, you may not get sufficient braking power until you use the manual over-ride switch. If the power setting is at an appropriate level, there may be a wiring problem.
Double check your ground. Make... view full answer...
It sounds like you have the ground taken care of. Are you using a tail light converter? Part # C55355 is the converter offered for your vehicle. The factory does provide the port for the towing wiring, but a converter is still needed.
If you have a converter installed already, I would recommend testing the wires on the input side of the converter. You should have 12-volts entering and exiting the converter while each function is activated. view full answer...
If you are getting an error message that a light is out and no light is actually out, there could be a ground problem or a wiring problem on the trailer.
Make sure that you ground the white wire of the harness to a clean bare metal surface.
Check the trailer and vehicle side connectors for any corrosion and clean it out. Next, check that the grounds on the trailer are attached to clean and corrosion free metal surfaces. A lot of trailer tail lights ground through the mounting studs.... view full answer...
Wind noise is pretty normal with the installation of a roof rack, but what you can do is install a fairing like part # RRRF2 and the wind noise will be greatly reduced.
Fairings are designed to direct the air over the rack to prevent the noise. view full answer...
I looked into the tail light harness that you said you had installed on your 1995 Pontiac Bonneville and since it draws the power from the tail light circuits I believe that is why your tail lights are hyper-flashing.
What I think would fix the problem would be to install a powered unit that draws amperage from the vehicle battery and only uses the tail light circuits as signal wires. For that I would recommend you get a Curt Wiring Kit # C59496. I attached installation instructions and... view full answer...
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