[wildcatfan94]

I have a 2001 Tacoma when the headlights are turned off and I apply the brake my dash lights come on. When I turn my headlights on I have dash lights but my outside brake lights look like I am riding the brakes and when I apply the brake it is hard to tell I have the brakes on. Also my light on the cab is also on. Anyone have any ideas to what is going on. Thanks

 

[TcmaBoy]

You have a short somewhere. The fun part is digging in and finding it.

I would pull the tail lights and check for ground where there shouldn't be.

 

[wildcatfan94]

Could this be caused by a bad relay? Could the Brake Pedal Switch cause this? What about a intermitten problem with the alternator? I also forgot to mention that if I push down hard on the brake without the key in the ignition or any lights on the instrument panel lights up. Help!!!!!!!!!!!!!

 

[TcmaBoy]

It could be a lot of things. The only way to find out is to break out a multimeter and check the wires.

 

[Gear Head]

do you have a trailer hitch with trailer wiring harness? if so the install on the harness could be wrong, I would start there first.

 

[monkeee2002]

Do you have any aftermarket lights on your truck?

 

[04SR5]

do you have a trailer hitch with trailer wiring harness? if so the install on the harness could be wrong, I would start there first.

Ditto this! A friend of mine had this same problem, and it was in the trailer harness. Good luck!

 

[04SR5]

Do you have any aftermarket lights on your truck?

Aftermarket lighting if done right without splicing the factory wiring won't effect the stock wiring. It will just blow a fuse or burn up.

 

[hilux5084]

check to see if you have the correct type of globes fitted it sounds like you have single filament globes fitted instead of the double filament type, or the trailer connector if you have one fitted.

Joe