Has anyone ever had one of these go bad? All of a sudden, I have no break lights. I have running lights and tail lights. Checked bulbs,
Both looked ok. I have a 99 LS

 

It's a switch, switches go bad all the time.

Unplug the brake light switch and jump the 2 leads, [most likely a white/green and a green/white] if the brake lights work, the switch is bad, replace it.

If brake lights still do not work, test for power on on the white/green, [input], if there is no powe,r check fuse and wiring to the brake light switch, if there is power, wiring from the switch, [green/white] to the brake light bulbs the bulbs themselves and the ground for the brake light bulbs. 94

 

Ok will do. Thanks!

 

what he said but before you do all this power testing check to see that the plastic piece that the button pushes against didnt break apart

 

Ok. I check that too

 

If the "button" was gone, [broken] the brake lights would be on all the time. 94

 

By turning the screw, do you mean the Allen screw? It looks like a Allen plug on the end, opposite end of where you plug into the iacv.

 

Say what???, the brake light switch is nowhere near the IACV, what "Allen" screw are you talking about??? 94

 

Hahaha sorry wrong thread. I've got two going at once