At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- 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.
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia
Do you know what a wiring diagram is ? Do use a test light ,use a DMM - digital multi-meter . Free wiring diagram here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model . Under system click on lighting then under subsystem click on turn signal lamps . Then click the search button then the blue link . Scroll down to last diagram .
The circuit board needs to be replaced. Which is the board that the bulbs sit in. If you remove the turn signal bulb. You will notice the bulb socket will be slightly burnt inside. I had the same problem with my 99 Denali and replaced the circuit board for $35.00. Now everything is fine.
I'm inclined to believe it is the turn signal switch. When you select left or right, the brake light is removed from that side, and the flasher is connected to the bulb instead, making the brake light on that side flash as the indication that you plan to turn. You have lost everything, but the simple answers check out.
If you have lost signals, brake lights and tail lights, then it is more likely that the ground supplied to the bulbs is not working, since the tail lights share noting in common with the brakes lights and turn signals but ground.
If the tail lights work, the fact that the brake lights and rear turn signals share that switch starts to look meaningful — even more so if the front turn signals also don't work. But the front signals and the rear signals use different circuitry in the switch, so it would be something more mechanical in the switch than electrical in that case.
It is most likely another faulty bulb in the turn signal circuit.
Ensure the indicator bulbs are replaced with the correct (specified) wattage rating.
Check you haven't dislodged or otherwise lost the ground connection to the rear tail light bulb sockets.
My 99 SLK230 had the same issue. Looked into it and found that there was actually a recall on the tail light assembly because of this exact problem. Granted it was the driver side tail light but you may have the same issue. Hope it helps!
If you have access to a simple 12 volt test light, you can remove the bulb you replaced, turn on the turn signal and park lights and see if the test light lights up. If the turn signal contact blinks the test light and the tail contact lights the test light, you know your power supply to the bulb is good.
Next you will check the ground.
Using your test light, carefully touch the tail light contact with the test light tip and touch the test light ground to the socket ground. If the ground is good the test light should light.
Let me know what you find and we will go from there.
Regards,
TURN SIGNALS WILL FEED BACK THROUGH THE TURN SIGNAL SWITCH.THEY ARE INDEPENDENT OUT SIDE ON THE CAR BUT NOT IN THE SIGNAL SWITCH.REPLACE THE SIGNAL SWITCH
remove the trim panel at the very rear of trunk, remove it and place it out of the way, remove tail light Assemblyretaining nuts top and bottom, I think there are 6 per side, pull the tail light assembly straight back to access the bulbs for replacement.
video shows second wire that plugs into signal light I do not have one
There should always be a second wire. One for each circuit
×