Brake lights blowing fuse - Update

[Chryco Psycho]

Thinking on this 

[blown motor]

Well I'm making progress but still diagnosing. The fuse box on the truck is beside the glove box and I can see it with the glove box door open. So today, with the key in the on position, but the truck not started, and my foot on the brake I put the shifter in neutral and I see the fuse blow. AND, I can hear it arcing inside the steering column! Now I know where the problem is, I just don't know yet what it is. Heading to NY for a few days so I'll get back on this next week.

[anlauto]

Bare wires on the signal light switch or the switch itself 

[blown motor]

Well I finally got to the root of the problem. At some point in history before I owned the truck the shifter ring on the outside of the steering column go damaged. The triangular cut pushed inward and when the shifter hit neutral that piece would contact the turn signal wiring. Once it had it rubbed bare it would contact the wire and blow the fuse.

[Bullitt-]

....Ain't that sumpin..    Good sleuthing

[anlauto]

Exactly what I thought .....knew it all along....happens all the time....I just didn't say anything....don't want to be labelled as a "know it all"     

Of course I'm kidding, good catch Murray

[Jay Bee]

Excellent and thanks for the details. What a sigh of relief and accomplishment you must feel. Good job Murray 

[Brads70]

   I bet you pulled a few hairs of finding that one! Good catch! 

[71GranCoupe]

Retired electrician from 40+ years doing construction, instrumentation and networking. Diagnosis is/can be a major hurdle; the repair is usually simple. Great find. Probably never see this one again.

[anlauto]

I wonder if that column piece is the same as E Body, if so, I have one here from a column shift car.

[Dakota]

Great news!!

For a little while, I was beginning to think we'd have to change your nickname to "blown fuse."  😁

[Jay Bee]

For a little while, I was beginning to think we'd have to change your nickname to "blown fuse."  😁

[blown motor]

Great news!!

For a little while, I was beginning to think we'd have to change your nickname to "blown fuse."  😁