Find the short in brake light?

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Grit dog

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Auburn, Washington
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Todd
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1986, 1977
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K20, C10
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454, 350
So little advice maybe please?
Following my son in the 86, for a few minutes the lady brake and turn signal wasn’t working.
Then it started working again.
Checked bulb and socket. No amount of wiggling or tapping on the bulb made it go out.
Ground is solid and clean. Wiggled that wire too.
Didn’t crawl under and mess with the tail light harness plugs could be there. But those are also clean and dielectric grease when reassembled a few years ago.
Any likely spots for an intermittent short on a clean not corroded, not hacked up factory wiring?
Thanks!
 

AuroraGirl

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Northern Wisconsin
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Taylor
Truck Year
1978, 1980
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K10, K25
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400(?), 350
So little advice maybe please?
Following my son in the 86, for a few minutes the lady brake and turn signal wasn’t working.
Then it started working again.
Checked bulb and socket. No amount of wiggling or tapping on the bulb made it go out.
Ground is solid and clean. Wiggled that wire too.
Didn’t crawl under and mess with the tail light harness plugs could be there. But those are also clean and dielectric grease when reassembled a few years ago.
Any likely spots for an intermittent short on a clean not corroded, not hacked up factory wiring?
Thanks!
is the 86 what your son was in or you
And what year is the vehicle (a CAN vehicle vs a 1990s will be different things to check)
 

Ricko1966

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kansas
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Rick
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1975
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c20
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350
Play with the turn signal switch,and wiggle the wires at the base of the column while someone watches the rear. @Grit dog quoted me on post 5 read the quote,now you guys know why everything I post gets edited at least once. This one.twice already.
 
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