The Stovebolt Site Forums The Shop Area The Electrical Bay turn signal dash indicator

"if i put my test light on the bulb my test light blinks bright but the bulb is very weak. take the test light off the bulb goes out."

Assume "bulb" means the indicator bulb.

What does "on the bulb" mean exactly????? What kind of test light, the ice pick style? Are you pushing on the bulb glass or touching the side of the bulb case with pick and the tester clip on ground? Touching only the socket? Took bulb out and tested contact down in? These questions are important even if sound silly.

So far what you posted indicates there is a flash signal getting to the dash bulb socket for left and right. Seems bulb is good, "seems" ground is good. So will wait for test details. Seems like what you did during test has the clue. Loose bulb loose socket, Assume test described was with turn signal lever on right turn.

How are you getting to the bulb to test?????????


Best guess: Wire connections at one of the connectors or at the turn signal switch or at the dash bulb socket is partially broken, loose, corroded. So as not able to deliver a strong voltage thru bulb and into socket/chassis ground. but test bulb lights because it has it's own direct ground and maybe a different diameter filament is a low amp draw LED. The dash indicator bulb gets it's right turn signal from a Dark Blue (DBL) wire from turn signal switch (also DBL) at a double up at the firewall connector. Indicators get their signals from front turn wiring.