Im pretty good when it comes to cars but I can't figure this one out. Maybe ya'll can help me out. When i apply the brakes or turn on my turn indicators (left or right) or have 4-ways going, both front marker lights and rear tail lights and license plate flash insync with the flashers, this is without the headlights on.... i've checked for short-to-ground, short-to-power made sure i have good grounds. made sure didn't have water in any of my lights. So im I don't know, maybe someone out there has or had the same problem and fixed it. I have 98 tacoma. if there is a solution to this problem please HELP ME!

 

Either the brake/turn lights in rear have a bad ground or a brake/turn/tail lightbulb with dual filaments (1157 etc) touching each other causing a feedback situation. If grounds are ok inspect the brake/turn lightbulbs filaments and replace as necessary.

 

i never had that problem but maybe u got a shortage somewhere, personally i don't think it the ground because if it was a ground then your lights would not work, make sure to check ur wires.

 

hey this is greg i thought of another thing, ur wires might be touching some metal on the car so check so it does not

 

yah thanks guys i figured it out it was the damn trailer light box that went T-U!