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Turn signal blinks fast

1999 T&C Limited. Left turn signal working properly. Right blinks fast, and the light appear dim. That would usually indicate that there is at least one bad bulb. However, the two front lights and one rear all are work properly. I notices the front right side maker was not working, although the left did not blink with the left turn signal. I don't know if the side markers are part of the turn signal circuit. When I attempted to replace the right side marker, I found the socket was quite burnt. Just as a test, I removed the good bulb from the left side marker. It did not work in the right socket. Also, the lack of a bulb in the left did not affect the turn signal speed.

Other than replacing the socket in the right side marker, can anyone give me a clue as to why the right is still flashing fast?

Tom

Reply to
Piperson
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The side markers are a separate circuit and therefore won't (shouldn't) affect blink speed. Some car makers have wired the marker lamps in series with the signal lamps causing them to flash opposite of the signal lamps (signal-marker: On-Off, Off-On). The signal lamps are a much higher wattage which is why they aren't illuminated by the marker lamp current (a low-tech trick that works quite well).

Back to the real problem. Check the lamps to see if they match. My guess is the right side has different model lamps (different wattage) than the left. If the total current drawn by the two sides is different, they will flash at different speeds. Check your owners manual to find out which lamps it should have.

If both sides have the correct lamps, visually check to see if the right side is dimmer than the left. That would indicate to me a bad ground. Look for wires that are connected to the frame to see if any of them are loose, rusty, or corroded. I don't have a manual for a 99 T&C so I have no idea where to look.

HTH

Reply to
Gyzmologist

I had similar issue on 95 caravan SE (in addition all rear tail/turn lamps would go out when brake lights came on, but ONLY when head-lamps were on). Turned out to be bad ground line somewhere along the harness in the body panels. I took the easy way and made a new ground connection at the socket connector and that cleared the problem. Worked fine for several years till I traded the van in.

Reply to
PC Medic

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