1994 Ford E-150 Econoline. I have an electrical short in my car when I turn my lights on or I step on my brake.
Okay let me see how I can explain this. I am in desperate need of help with this problem. I am having with my 1994 E-150 van It seem to have a short running through my lights somewhere. It only shorts when I turn on my lights or step on my brakes and my lights seem to be real dim. Sometimes it seems like the car is about to turn off while I'm driving it. It also has my dash gauges jumping around like crazy. Can someone please help me? I've been trying to figure this out for months. The closest I got is that the Number 8 fuse that's underneath the dash which is a 15 amp fuse is running constant power. How I figured that out was getting a circuit tester and unhooking the positive battery post underneath the hood and connecting the circuit tester to the positive connection and pulling the fuses until the light on the circuit tester goes out and sometimes I have to jump my car because it's constantly flattening my battery. Can someone please help me?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Are you sure these are not the brake lights? I think they are. Go under the dash above the brake pedal and disconnect the brake light switch and see if the brake lights go off, if so replace the switch or adjust it.
Check System Fuse - A fuse is used to protect the brake light circuit from amperage overload. If the fuse has failed it will not allow the electrical current to continue to the brake lights. To check the fuse, first locate the brake light system fuse in the fuse panel which is either under the dash or under the hood in the power distribution center. Connect the test light to a ground like an engine or dash bracket and turn the ignition key to the "on" position. Using the test light probe both sides of the fuse. If the test light illuminates on both sides the fuse is okay continue onto the next step. If one side of the fuse illuminates the fuse has failed and needs to be replaced. If the fuse fails as soon as it is replaced or when you apply the brake pedal the brake light electrical circuit is shorted to ground. Rarely a system short can occur, a car repair manual is needed to find the wiring schematic for the brake light circuit. Once the brake light wiring has been located inspect and repair as needed.
Check Brake Light Bulbs - All cars have three brake light bulbs that create the brake light illumination affect. If all of these brake light bulbs fail no brake light operation will occur. I know what you're thinking, you might say all three brake lights at once? But in reality one brake light went out at a time and you did not notice. People only tend to notice something when they almost run into the back of your car to help persuade them to inform you the brake lights aren't working. Remove any of the brake light bulbs to confirm the bulb is okay or burned. After the bulb has been removed inspect the filament and replace if failed. If the brake light bulbs are okay continue to the next step.
Checking the Brake Light Switch - A control switch is used to connect the brake light electrical circuit. This switch is located near the brake pedal lever. Basic switches have just two wires, power in and power out to the turn signal switch. Use a test light that is grounded and with the key in the "on" position test for power at one side (wire) of the switch, then press the brake pedal while testing the opposite side (wire). It should illuminate the test light, if electrical power is connected through the switch go to the next step. If no power is detected through the switch the brake light switch has failed and replacement is required. If your car is equipped with more than two wires integrated into the brake light switch a car repair manual is needed to locate the proper brake light circuit wiring.
For 1989 Jeep Cherokee the Flasher is located: * Front seating area, driver side, under dash, above kick panel, mounted in bottom of convenience panel for Hazard flasher * Front seating area, driver side, under dash, above kick panel, mounted in top of convenience panel for Turn signal
Try this possibilities to locate the fault.
First get your voltmeter or 12v test lamp out. Check the 30 amp Brake (#2) maxi fuse in the under hood junction box.Fuse should have 12v at both sides at all times. If okay proceed. Go to the brake light switch. The orange wire should have 12v at all times. The white wire should have 12v when stepping on the brake. If okay, proceed. Next thing is the brake lamp relay in the underhood fuse box. Swap the relay with one that looks just like it and recheck the brake light operation. If the relay is no good replace it. If the relay is swapped and still not working, see if you can feel the relay clicking when someone else steps on the brake pedal. batt is power from the maxi fuse 12v all times sls is the white wire from the brake switch 12v with brake applied. gnd is body ground 0v all times mfs goes to the multi function switch 12v with relay activated the circuit is simple—power from the brake light switch white wires turns on the relay which then sends power back to the multifunction switch for distribution to the rear lights. if you jump terminals batt and mfs the brake lights should come on. If you have no power at terminal sls with the brake applied then you have a wiring fault white wire between the brake light switch and the relay Thanks. Keep updated for any more query. You can rate this
solution and show your appreciation.
This is normal operation. The DTRL's turn off so on coming traffic can see your directional lights blinking. Your daytime running lights are so bright it is hard to see your turn signals during the day.
Also did you know that if you press in/out your dome override switch 3 times you can turn off your daytime running lights. After you hear a "ding" your lights should be off. Do the same to turn them back on.