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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Red Dog on March 14, 2016, 02:18:01 pm

Title: Can I rule out a bad turn signal switch? ('79 C10)
Post by: Red Dog on March 14, 2016, 02:18:01 pm

Howdy folks,

I've been battling a left signal issue for about 2 weeks now.  I've looked at schematics,The bulbs, the grounds, etc.  When I throw my left signal, the REAR works perfect.  The front however does not.  It will work with 4ways no problem.  I've been told this is a ground issue but cannot find any bad grounds.  The signal and side market are not working.

Today I'm going to replace the socket assembly of the turn signal;  as a last ditch effort before tearing into the steering column.

On a side note, when I originally purchased the truck.  The Left REAR did not work either.  This was caused by one of those Walmart LEDS, I switched back to a regular bulb and the REAR signal works fine.  My front bulbs are good however.  s.o.s

Thanks

Title: Re: Can I rule out a bad turn signal switch? ('79 C10)
Post by: zieg85 on March 14, 2016, 02:42:00 pm

I've had switches go bad exactly as you describe.  I've switched steering columns before to find out the column I just put in, the switch was bad...