I have back lights but no brake lights on a 1994 dodge dakota. It is something under the dash. I dont have a wiring diagram to look at. where can i get a wiring diagram for free and what could be the problem?

The brake switch at the pedal does have six wires, but none go to the multifunction switch (on the steering column). The white wire with tan tracer goes to the combination flasher to be integrated with the turn signals/hazard lights. The combination flasher is under the dash next to the steering column and has a sixteen pin connector (ten of which have wires).

Did you check for voltage at the 50 amp fuse circuit. Even if the fuse is good if no voltage on the fuse circuit, the circuit is still dead. There is a light green wire that carries voltage from headlamp switch to dimmer, is that wire hot with headlamp switch on?

There are wiring diagrams for free, just about everywhere, if you don't have one. Autozone .com has free wiring diagrams on vehicle repair guides link. You have to register your vehicle, year--make--model, all that good stuff. It's free.

The ground wiring on newer vehicles is a little complicated. Older cars, the ground would have been to the body around the tail-lights, but these have a ground wire in the harness and is connected to the turn-signal switch, and other sources. I don't think you have a ground problem. Does the fuse blow as soon as you press it into the fuse-block, or when you step on the brake? I believe you have a dead short somewhere, possibly a pinched turn-signal wire close to the tail-light assembly. Brake lights work through the turn-signal wires from the turn-signal switch on the steering column. That's how you can have one side blinking for turn while the other side stays on for brake. I'm kind of shooting in the dark here because I don't know what all you've done. If you replaced the turn-signal switch in the steering column, you may have pinched a wire or something there. Another thing, if the fuse doesn't blow as soon as you press it in, will both turn-signals work as long as you don't press on the brake? If you can provide a little more information, I might be able to help you more. One last thing....Have you replaced tail-light/turn-signal bulbs? If so, be sure you used the right bulb. You should only have two bulbs, one for back-up lights and one 1157-type combination for tail-lights and turn-signals. I have seen people use a single contact (1056) bulb in place of a 1157, which creates a short from brake/turn-signal back into the tail-light circuit. I do have a 1994 Dodge Dakota.

You'll have to disconnect the lights to track down the short. It could be one of the lamp sockets, or something in the wiring, or in the turn signal switch.

The fuse for the brake lights also powers the ABS control module. Check the brake light fuse.

check under the dash a plug is unplug is un pluged or u have cut wires

in my 94 dodge dakota when i turn my lights on sometimes all extior lights work and dash one dont and when i turn my blinkers on all my gauges bounce with the blinkers its weirdd

www.wiring-diagram.com
You can get any wiring diagram for any vehicle. It will cost about $12 and it's well worth it. It will give you the complete diagram bumper to bumper.

lay down on your back on the drivers side floor and look up... it's located just behind the brake pedal

Robert

Please take a moment to rate this solution

it sounds like you have a major electrical problem check all the fuses and look for any burned wires under the hood