The problem is that after using the hazard switch, the turn signals fail
to work.
The quick fix is to snap the hazard switch on & off several times with a
very firm hand. This usually cleans the dirty contacts enough to get the
turn signals to function, or returns everything to the original clean
location.
The real problem is that the power to the turn signals comes from the
hazard switch rather than directly from the fuse box. If the hazard
switch terminals become dirty through an accumulation of dust or
corrosion, the movement of turning them on then off may leave the
contacts on a dirty or corroded spot.
The correct fix is to clean the switch, some dissasembly may be
required. Here is a good place for that WD40 spray instead of wasting it
trying to get it to bust rust, which it won't. It will provide a
protective coating for the newly cleaned terminals.
Jim
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