brake lights not working help

[e30euro]

ok as it says lol i had a blown fuse i fixed that and they still dont work anyone its a 4 door 90 325i 5 speed

[StereoInstaller1]

First off, let me tell you rule #1 in electrical diagnosis: your eyeballs cannot test a fuse.

If you do not measure voltage (and I recommend a test light) you have not tested that fuse...follow this rule until death!

The side benefit is that you also know that the circuit is live.

So grab your testlight and check Fuse 6. It is 7.5A. KEY ON!!!

Now, drop the "hush panel' and check the violet/green wire, at the brake switch.

Do remember that both that fuse and the wire need to be tested with the key on!

Now check that green/red wire while pressing on the brake pedal. If it lights, you now get UGLY issues: you have a broken wire somewhere between the front and back of the car

[e30euro]

:hitler: :hitler: oh dam

[StereoInstaller1]

Oh come on, it is a $5 testlight...get busy!

[e30euro]

ok i have no power to the brake fuse or the one that blew so i will pull off the kick panel and check the wires

[StereoInstaller1]

On your ignition harness is a violet wire: that is what powers fuse 6. There is only 1 connection shown between that ignition switch and the fuse, so check power at your ignition switch next.

[e30euro]

i dont see any power to the wire

[e30euro]

hold on got the check the other wire and dam its hot

[e30euro]

brake switch is bad thanks for all the help man :)

[E30 Cabrio]

The Brake switch can come loose so the plunger won't get depressed when the brake pedal is applied.

I had it happen on my 325es and tightening up the bolts resolved the issue.

[e30euro]

i ended up using oil by the button and its perfect now lol

[vrchards]

Sounds like the turn signal switch could be bad, the brake light circuit does run through the switch. Otherwise you could have some of the wiring messed up at the connector at the bottom of the column?