I copied this from an earlier question:
What could be wrong with brake lights, if not the switch, bulbs, or fuses?
The brake lights have stopped working in my Ford Explorer. The bulbs are new, the brake switch is new, the fuses are not blown. What else is there to check?
by Paul @ Bundy's Auto (becker@ThisisToPreventSpam-VKW-RemoveThis.wzrd.com) contributed on November 08, 2003, at 7:26pm. Last updated on November 10, 2003, at 12:26pm. Sounds like you've been doing some guessing! You need to find where the power stops. Use a test light at the sockets. If no power, go to the wire to the socket. When you find where power goes in but doesn't come out, you have your answer. Assuming there is one answer. There is also a possibility of a ground problem. Good luck.
It could be one of many possibilities. I had a brand new s-10 that I was working on and it would blow out the fuse at weird times. I ended up chasing it down to a bolt that was left under the carpet from the factory. the bolt had rubbed through the wire and would short out and pop the fuse.. sometimes electrical problems can be a bear......
A car that shuts off when the turn signal is used indicates a major short in the electrical system. When the turn signal is used, it cause a massive draw on the power and shuts it down.
A short in the turn signal switch or the wire in the steering column is shorted. There is more likely a short in one of the bulbs. easy to find remove bulbs until the bad one is found then replace
A short in either the multifunction turn signal switch or a short in the wiring harness going to the switch.
The turn signal relay is underneath the dashboard on the drivers side in the fuse box. If you are looking for the acutal turn signal its on the steering column.
Could be there is a short to ground somewhere in the system or the circuit is overloaded with extras. If you have a trailer plug in back take a good look at that area for a short.
short circuits in the turn signal and brake light circuits
To replace a turn signal switch in a 1993 Chevy Lumina go to the trunk of the vehicle and find the plastic covering for the turn signal. Remove the cover and replace the bulb.
A short in the turn signal wiring can cause the voltage gauge to fluctuate. A loose ground wire can also cause the gauge to fluctuate.
There is a short in the wires in the turn signal circuit. The combination switch in the steering column is a good place to check. Do the hazard lights still flash?
When replacing the rear turn signal on a 1999 Acura Integra open the trunk. Locate the rear turn signal housings and find the bulbs. Remove and replace the bulbs.
it's normally under the dash.. turn on the turn signal and find the device that is clicking. That shoudl be the flasher unit/regulator/relay
Yes - on passenger side of dash with turn signal and emergency flasher relays. Turn on your turn signal or e-flasher and listen for ticking - you'll find it...
You can find the turn signal relay switch beneath the dashboard, on the drivers side. The relay switch is round and labeled.
You can find the 1993 Infinity turn signal flasher relay unit beneath the drivers side dashboard. The turn signal flasher relay unit will be above the accelerator pedal.
You have a dead short somewhere, it could be in one of the the bulb sockets, the wiring or the signal switch.
The 1996 Mercedes-Benz turn signal flasher unit can be found beneath the drivers side dashboard. The turn signal flasher relay unit will be above the brake pedal.
If in the cluster, it is the warning of a failure in the theft alarm / sentry key system.If on the rear, outside. It is a turn signal.If in the cluster, it is the warning of a failure in the theft alarm / sentry key system.If on the rear, outside. It is a turn signal.
It has been my experience that a rapid turn signal indicates there is a burnt-out signal light bulb (either front or rear) on the side of the rapid blinking signal. If the right signal is blinking rapidly, the problem is in the signal lights for the right side (front or rear) of the vehicle. Turn the rapid signal on and step out of the vehicle to find which bulb is not lighting.
If it's an old one with a Grote turn signal switch, you'll find a little sliding gadget under the turn signal handle; pull it away from the steering column and the flashers will go on. (Move the turn signal handle to turn them off.) A new Mack will have a flasher switch with a little triangle icon.
you probably have a short in your wireing
In nearly every case the actual turn signal wires run from the bulbs in the turn-signal housings directly to the hazard switch. This is done to allow the hazard system access to the turn signal bulbs without having to run an additional set of wires out to each bulb just for the hazard system. To make this design work the primary turn signal system feeds the outputs it wants to send to the bulbs, located out in the turn signal housings, into the hazard switch itself. So the hazard switch is actually a multi-pole double throw switch that connects the actual turn signal wires from the bulbs to either the hazard circuit or to the turn signal circuit depending on the position of the switch control button/knob. So if you cannot operate the hazard switch because the knob broke off then it is likely stuck in hazard mode or somewhere in between and it cannot connect the bulbs wires to the turn signal system while in this state.
Turn signal indicators are lights. The flash to tell you, or indicate, that a turn signal is on, and which way the lights are flashing.
Push in on the turn signal indicater
The turn signal/hazard flasher is accessed from below the left end of the dashboard with the kick panel removed.
my turn signal indicator flashes rapidly but the actual turn signal does not flash only on one side