The tailight brake lights on my Caravan stay on whenever the key is on. The third brake light works fine, on and off with the brakes. I've heard the taililight brake lights are fed from the TIPM. I can't find a wiring diagram to check it out. Does anyone know what causes this? Could it possibly be the brake light switch? Does anyone know where I can get a wiring diagram?

 

 

BBB Industries offers free wiring diagrams at their site here: http://www.bbbind.com/free-tsb/

 

I took off the battery cables and hooked them together for a hard reset while I went to the parts store for a switch.After a 2 hour hard reset I hooked it back up with the original switch still on and the brake lights all worked fine, so it was the TIPM. I went ahead and put the new switch on or I should say I tried to put it on. The one from the parts store didn't fit. Took it back and after some searching found out that my 2010 has a 2011 switch on it. Different physical shape, terminals are wider. If anybody changes their switch you may want to take your old one with you to the parts store.
Thanks to all for the help and especially for the wiring diagram info.