Free brake light wiring diagram

Does the fuse blow before or after you step on the brake? If it blows only after you step on the brake, and voltage from stop lamp switch only goes to rear brakes and not through multifunction switch. If only one connector at the rear for brake lamps, take connector loose, step on the brake, if the fuse still blows, the problem is before the connector. You could Use new wire from brake switch feed, when brake switch is activated, to the rear brakes. Leave pigtail at both ends, splice in new wire, You could let new wire just lay on the ground, for testing, from brake switch to rear brakes. If the brakes work and doesn't blow the fuse, Make the new wire permanent and route the wire properly. Just my opinion. I don't have wiring diagram for your model year.

It sounds like a short in the brake light circuit. When you are hitting the brakes, it is sending power along the positive wire of the circuit and shorting on the ground somewhere in the circuit. They make tools for finding shorts, which consists of an amp meter and circuit breaker. However, you can start by checking all wires that go to the brake lights. Start with the ones that are usually accessible through the trunk. Don't forget to check the third brake light if your vehicle has one. You will also want to check the bulb sockets themselves.

The lower lights are on a separate fuse by law, that is why the hi mount works. Check for wiring issues to the rear brake lights wiring harness, buy a factory wiring diagram.

Sounds like a short either in the brake switch or wiring .The switch is located near the upper part of the brake peddle.

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} The brake switch is usually like the switch in your trucks doorframe that turns your dome light off. You can push in on the switch with the door open to get a feel for how it works. Push it in and your dome light turns off. The same thing happens with your brake light switch. When you push on your brake peddle it is the same as your truck door being opened. When the brake peddle, is in its home position as in no pressure on the peddle pad, the arm of the brake peddle pushes the button in which, breaks the circuit to the brake lights.

The switch could be bad. It is easy to spot the switch look at the arm of the brake peddle and see if you can see a bracket that holds the switch against the brake peddle arm. Use a flashlight.

You might be able to tell if the switch is bad by only removing one of the wires and see if your brake light goes out. If your brake lights go out with one wire removed, the switch most likely is bad.

I have also seen where a driver caught there shoe string or shoe on or under side of the peddle and when they pull there foot up they bend the bracket that holds the brake light switch. By bending the bracket they move the switch away from the peddle arm and the switch no longer gets pushed in enough to break the circuit.

A bent bracket can be an easy fix just bend the bracket back to its original position. Please be very careful the bracket can be sharp. In addition, the bracket can crack, to help prevent this let your truck heat up inside if the A/C has been on etc.

You can take all of the wires off the switch and remove it. Take the switch to your local auto parts store they should have one and will be glad to test your existing one.

If there are more then two wires draw your self a diagram, tag the wires with masking tape, and number them. Please be aware that you could blow a fuse if you touch the wire ends to any metal parts of your truck.

If you do not already have fuses in your glove box, you should pick up some while you are at the auto parts store. Please put the fuses in your glove box. I run into many people who say yes I have fuses, at home in there garage! I do not know about everyone else but my truck never breaks down in my garage. I think it is scared of all the tools around it. LOL.

I hope this helps.

Take care and stay safe

Thank you

Electric phone

Isnt there a switch on the brake pedal inside under the dash? There should be power going in and out when depressing the brake pedal. If there is a pressure switch, then check it when the brake pedal is up and then depressed. it should have power on one side up, and both when depressed. One thing to keep in mind that I think it goes through the turn signal switch, so if blinkers work, that tells you the wiring is good to the lights, so concentrate on power getting to and out of the turn signal switch.

ck brake light switch,,on brake peddle arm,,to see if it working,,press peddle down & look at brake light switch & see if the little plunger is coming out,,if it is stuck in brake lights wont work

The two wires running the length of the truck are most likely a 12volt pwr supply,a ground or trailer brake signal wire.usually for charging a camper trailer battery and trailer brakes, check the brake lamp fuses in your fuse centre,most likely 10a.replace if open.if they still are inop,check with a test lamp to see if pwr is at the light sockets,(clamp of test light to good ground,usually white wire for brake)if no pwr is there then make your way to where the trailer plug was installed and check for pwr there(make sure your brake peddle is depressed during these tests,with key off as not to pwr up the park lamps)also check the ground at the same time(usually black)by reversing your test lamp(clamp to 12v)your brake switch could also be faulty(switch with button on arm of brake peddle).pick up a chiltons or haynes service manual to help with wiring diagrams and wire colors.

under the brake peddle is a switch. Lift the brake peddle upwards and you will see that the brake light goes out [requires two people; one to hold the peddle up, other to view the brake lights]. Restrengthen the spring tension on the brake peddle.

Should the lights remain ON after you lift the brake peddle up, unplug one of the wires to the brake peddle switch. At this point, the brake lights should be off. This basically will determine whether your switch is shorted or is just a peddle pressing down on the switch due to a bad spring.

try brake light switch on top of brake peddle