>If your marker lights also serve as your turn signal lights, there should be 3 wires going into the bulb socket. Bad connection from the resistor at the bulb socket wire. Using 1 resistor to service more than 1 bulb. Resistor connected to the wrong bulb socket wire. This is not uncommon, as the numbers are very similar and bulbs are interchangeable, but often only interchangeable in one direction, (you can use a dual filament 7444 or 7443 as a single filament 7440, but not the other way around) 4 Possible causes of your problem: 1. If it only has 2 tongs, 1 on each side, then you have the wrong bulb. If it's a dual mode light, (marker light and turn signal), it should have 4 metal "tongs" at the base of the bulb, 2 on each side. The second thing is to make sure you have the correct bulb. If it works fine, the other side is where you would start. If it's all good, take one out and replace it with your led bulb and do it again. There's a + and - stamped into the head of the connector on the Novsight harness, just make sure the NEG lines up with the black wire on the heaamp harness and you're good to go.īefore you start, put the OEM bulbs back in and activate both signals. Just make sure that when you connect the socket from the wire to the socket on the headlight, you line them up POS and NEG. They come with a metal box that tucks inside the headlight assembly which eliminates any CANBUS issues. I used Novsight H LEDs (6000 lumens per bulb), I got for $59.99 CAD on Amazon and they work great. One resistor for each dual function bulb, attached as close to the socket as possible, and you can't go wrong.
At that connection, a green wire from the tail light harness could connect to a blue wire on the main body wire harness. All the bulb sockets lead back to a single connector, where it then plugs into the main body wire harness near the backseat and it continues on to the front of the vehicle. What I mean is, the wire harness for the tail lights, reverse lights, etc, is a separate harness from the main body wire harness that goes to the front. What you thought was a signal wire could actually be a ground wire, or a wire for another function, causing a mixed signal, at the point you made the connection. If you've connected the resistors further back into the system, and/or tried to use 1 resistor for more than 1 bulb, that could cause the camera to stay on and your reverse lights to dim, as the wire colours often change. (this wire usually has faint stripes, like a candy came). One end attaches to the negative (black wire) the other goes to the coloured wire that sends current to the part of the bulb that flashes (signal light), or turns on (brake light). (I did mine about 3 inches down from the bulb socket). Make sure you connect both leads to the wire harness that is closest to the bulb socket.
It could be as simple as the wrong polarity. First of all, pull each bulb out, turn it around and reinsert it. Lights with a single function, such as a reverse light, usually don't require a resistor, however lights with a dual function, (marker/signal light, or brake/tail light), will require a resistor. I have a 2016 GMC Canyon and just did the same, inside and out.
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