- Nov 19, 2013
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i have got a 96 mustang 4.6. the ac and brake lights stopped working.I am pretty sure it has to be the pcm. i am able to get the brake lights to work if run a wire from the brake switch to the back lights. also the compressor works when given 12v. i dont want to bastardize the wiring harness. is this a common problem with 96 stangs? are these circuits close to each other on the pcm? and yes i checked the fuses