View Full Version : Headlights Dim When hitting Brakes

02-26-2015, 01:26 AM
My headlights dim when I hit the brakes and now my radio kicks off sometimes. My battery is a year old and I checked the alternator coming back to the battery, which is around 14V. I am thinking that my brake switch is going and that it is shorting out some how. Usually they are a work or no good. I will be doing some more diagnosing this weekend but I would like some ideas from other Celica owners. This is a 93 GTS.

02-26-2015, 05:41 AM
Mine only did that when the alternator was bad.

Maybe see if there is another drain somewhere in the system because yes, typically brake switches are either Work/No work so I would inspect everything to be certain.

02-28-2015, 08:13 AM
Yeah, mine only did that when the alt was bad too.

You have any other gear to be aware of; IE Aftermarket stereo/amps/subs, etc?