My signal lights, hazard lights, and tail light aren't working.

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The parking lights should be on a different circuit from turn signals - hazard lights. The bulbs usually have two filaments, one for each circuit.
On most models there is a tail light fuse and relay that handles front and rear parking lights.

I don't believe it would be a bad ground for just one light. It could be a wire, a socket connector, or the bulb socket itself. See if the wire has power at the socket when signaling left, with key on. If there is power, probably a bad socket or connector. If no power, check for power coming from flasher-the wire going to front left, or driver's side. If you have power from the flasher, but nothing at the socket, the wire has probably broken.
Good luck.

lol sounds like my old truck most likely crossed wires

The wires that powers your head and tail lights are 2 yellows (one going in the fuse box and the other going out towards the high beam headlight), a White and a Yellow/White wires. Need to check them if the are "live". Also check the Orange wire that goes from your key switch to the fuse box. Also there is a Brown wire that goes from your key switch to your tail light. That should be "live" too when you turn your key ON. The wires I mentioned to your key switch, all are powered from the Red one on your key switch that comes from the starter relay. If the Red is dead then you start from your starter relay.

mporteous, It sounds like you have a light switch problem. I can't think of any other reason for the running lights and tail lights not working in this situation. Are your brake lights working when the headlights are off and how about when they are on? Do your four ways hazard lights work in these situations? Try all the lights under these conditions. The reason the left turn signal blinks very fast is because one of the bulbs are burned out. Try the left signal and one light (front or back) will stay on and the other will not come on at all. Replace the bulb that does nothing. Do this before you try all the lights in different situations. I think that you will have to replace the light switch. Good luck with this.

Turn the knob by the head light switch your tail lights work off the headlight switch not when the day time running lights are on only when you turn your headlights on

one of your bulb is blown one bulb will shut the rest off check all your bulbs.