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Diagnose this Turn Indicator Problem

Okay electrical wizards, here we go with this month's Diagnosis Derby.

71 bus (mine, actually). Turn indicator assembly is a bit loose on the steering column, so it is possible to rotate it fore and aft a bit.

If it is not exactly in the right location (9 o' clock) a problem can occur. This happens after using the turn indicator and then switching it back to the middle position. Instead of just shutting off, like a good turn indicator should, it goes into "fast blinker" mode. Fiddling with the turn indicator assembly and rotating it back to 9 o' clock or thereabouts fixes the problem.

Reply to
Mike Rocket J. Squirrel Elliot
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'71 switches the rear lights between turn and stop functions. If the switch hangs mid-position, it can still energize the front turns but have no bulb connected in the rear. Too little current and the flasher goes into fast mode.

Speedy Jim

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Reply to
Speedy Jim

Okay -- what's that got to do with the fact that the system goes into fast mode when the the turn signal is set to middle (off) position but the whole turn signal switch assembly is rotated a bit clockwise or counterclockwise on the steering column. It still switches to middle position, but the light! the lights! They blink!

Reply to
Mike Rocket J. Squirrel Elliot

Okay -- what's that got to do with the fact that the system goes into fast mode when the the turn signal is set to middle (off) position but the whole turn signal switch assembly is rotated a bit clockwise or counterclockwise on the steering column. It still switches to middle position, but the light! the lights! They blink!

Reply to
Speedy Jim

Will do, hope to learn something, will post if I do, hope to add to Body of Knowledge.

ANYTHING technique that involves wrapping something with electrical tape has gotta be considered with respect.

Reply to
Mike Rocket J. Squirrel Elliot

....also solves the 'Horn won't shut up' Mode as well.....

James

Reply to
Juper Wort

There are 2 possibilities:

Only 1 of the lights are blinking, so the current drawn is low, or

The switch is making poor contact thus the extra resistance reduces the total current drawn.

Either way, the flasher relay is sensitive to the amount of current drawn, and if that current falls below its threshold the flasher rate jumps to the fast mode.

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----------------------------------------------- Jim Adney snipped-for-privacy@vwtype3.org Madison, WI 53711 USA

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Reply to
Jim Adney

Reply to
ilambert

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