No Break lights

[beatsworkin]

No breaklights    Where do I start?

1971 Eagle model 05


Red Ruby

[NJT 5573]

Bulbs, broken wires at the back. No air, no power to switch, bad switch.

[bevans6]

You will be well served to have a schematic of your electrical system to help you probe this out, but generically there are about 5 things in the brake light circuit, and you just start at one end and work towards the other to find where the problem is.  There is a power feed from a main buss, a circuit breaker or fuse, a wire that feeds that positive voltage to an air operated switch in a main brake line, that feeds towards a relay that in turn takes that low power signal and switches a higher power feed to the lights themselves.  I would personally start by finding the components and looking for the loose wire, then making sure there was voltage at the air operated switch, that it was sending a signal to the relay, then check the relay.  But it's probably a loose wire or a bad connection.

Brian

[luvrbus]

Red, a simple test on a 05 Eagle with the parking brake and the main switch on if you have brake lites at the top set it will be a bad stop lite switch.
That switch can be found above the rear axle with 2 wires if not there it will be under the top step at the tunnel.  
If you do not have lites  with the test it will be no power to panel or from the panel under the drivers window.
Yellow and Green are your stop lite wire colors on the circuity

good luck

[beatsworkin]

Sorry but I gave you a bum stear.  It's not my brake lights it's my left turn signal.  It works great when my head lights are off but when I turn my lights on the left turn signal wll not work.  The right turn signal is ok.  So now where do start.


Red Ruby

1971 Eagle  05

[Len Silva]

Almost inevitably, when you have weird things like that happening, it's a bad ground somewhere.  They can be hard to find, just keep looking.