Hey guys im new to the forums and i have a 1997 2 door blazer that has the tow package with the wires for trailers on the underside and i am having issues with the brake lighting. I hooked everything up and i have running lights and turnsignals but no brake lights. Its not the trailer because ive tried it on multiple trailers and even got new lights and it still doesnt work. Please help. thanks

 

are the brake lights working on the Blazer ?

its the same wire powering the bulb for brake as signal

 

thanks for the help i fixed it i just didnt have a good ground

 

A bad ground can cause some wonky issues