| Re: [GMCnet] Turn signal, brake right side short [message #313701] |
Thu, 23 February 2017 22:00  |
THOMAS R WHITTON
Messages: 47
Registered: September 2016
Karma: -1
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I am blowing fuses immediately when I press on the brake pedal or turn the turn signal to the right. This appears to be a dead short somewhere. The left side works fine. I have probably spent 10-12 hours tracing and examining wires and connections but haven't found the problem. Does anyone have a suggestion on what this might be or where to look next? Obviously, I can't drive more than around the block until this is fixed. Appreciate suggestions and ideas...
All the best,Tom Whitton26 foot updated GMCPaducah, KY
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| Re: [GMCnet] Turn signal, brake right side short [message #313706 is a reply to message #313701] |
Thu, 23 February 2017 23:10  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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THOMAS R WHITTON wrote on Thu, 23 February 2017 23:00 I am blowing fuses immediately when I press on the brake pedal or turn the turn signal to the right. This appears to be a dead short somewhere. The left side works fine. I have probably spent 10-12 hours tracing and examining wires and connections but haven't found the problem. Does anyone have a suggestion on what this might be or where to look next? Obviously, I can't drive more than around the block until this is fixed. Appreciate suggestions and ideas...
All the best,Tom Whitton26 foot updated GMCPaducah, KY
Tom,
In the time I have been doing auto electrics, I have twice had bulbs get loose in the base and short out. Try that first. If you take the bulb out and the fuse don't blow - you got one.
I do not believe that there is any intentional ground in the signal switch assembly.
Where I would go now: Get a signal tracer and attach it at the light connections in the rear. Follow the annoying noise until it stops and then try to figure out what happened there.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Turn signal, brake right side short [message #313714 is a reply to message #313706] |
Fri, 24 February 2017 07:55 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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As Matt said, remove the bulb from the rear and see if the fuse still blows. I've had at least a dozen shorted bulbs cause this problem in my lifetime of being Mr Fixit. Let us know the results and we will go from there.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| Re: [GMCnet] Turn signal, brake right side short [message #313746 is a reply to message #313744] |
Fri, 24 February 2017 18:03 |
Jerry Wheeler
Messages: 246
Registered: January 2013
Karma: 2
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What dash camera are you using Thomas Phipps?? I have to deliver a 78
Royale to Emmett, Idaho, in mid May; I plan on purchasing one. Driving
from NC.
JR Wheeler 78 Royale NC/OR
On Fri, Feb 24, 2017 at 6:57 PM, Thomas Phipps wrote:
> Move to Alabama, there is a great number of vehicles that have or don't
> use turn indicators, or even brake lights.
> Dash camera is a good investment here.
> Tom, MS II
> --
> 1975 GMC Avion
> KA4CSG
>
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| Re: [GMCnet] Turn signal, brake right side short [message #313748 is a reply to message #313746] |
Fri, 24 February 2017 19:06 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Have you done any work inside lately? I had an issue after redoing the kitchen cabinet. Apparently I ran a screw into the bundle of wires that go to the rear lights when installing the shelves under the sink (RB Royale). Those wires run through the wall on the left (drivers) side of the coach. If you've done any work on that side that involved driving screws into the wall that might be your problem.
Just a guess, Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: [GMCnet] Turn signal, brake right side short [message #313753 is a reply to message #313701] |
Fri, 24 February 2017 21:37 |
THOMAS R WHITTON
Messages: 47
Registered: September 2016
Karma: -1
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Please let me make you aware that Yahoo email places question marks (?) after every period in a message. I'm going to switch to another system. Until then, ignore the questions marks. Sorry, these question marks make reading email messages harder. Billy Massey has offered to help switch systems.
Update on the turn signal short problem.Thanks for your suggestions. Here's what I have done today. I removed the right rear tail light assembly. Fuses still blow when brakes, flashers or right turn signal are applied. I also disconnected the large 10-wire connector on the side of the steering column and took ohm readings on the disconnected wires running up the column. The readings all read zero. I then took ohm readings on the disconnected load wires. Here I received some low ohm readings showing resistance on the wires running to the turn signals. I did this test in a hurry and plan to do it again tomorrow to double check the readings. But, at least for now, I'm thinking the short problem isn't in the turn signal switch inside the column but somewhere in the wiring leading to the front or rear lamps. I have checked this wiring closely but apparently not close enough. Since there were no screws in the right tail light assembly during the testing, I'm thinking it is probably doubtful that mounting screws are causing the problem. Of course, anything is possible. If anyone has a suggestion for isolating the short by all means please let me hear it. This has become a huge aggravation. I look forward to hearing from you.
Thanks,
Tom Whitton26 foot updated GMCPaducah, KY
Original message:
I am blowing fuses immediately when I press on the brake pedal or turn the turn signal to the right.?This appears to be a dead short somewhere. The left side?works fine. I have probably spent 10-12 hours tracing and examining wires and connections but haven't found the problem. Does anyone have a suggestion on what this might be or where to look nex Obviously, I can't drive more than around the block until this is fixed. Appreciate suggestions and ideas...
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| Re: [GMCnet] Turn signal, brake right side short [message #313762 is a reply to message #313753] |
Fri, 24 February 2017 23:21 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Check the resistance to ground on the green wire running back to the right rear bulb. check it with both ends disconnected. CHECK THE TRAILER CONNECTOR WIRING...man has that got me a few times...there should be infinite resistance to ground on that green wire when both ends are disconnected (at the column and at the bulb). Also look for 1 strand of wire to have come out of the crimped terminal that is in the bulb socket possibly contacting the socket. You will have to push both wires and the insulating plate up out of the socket to inspect them.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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| Re: [GMCnet] Turn signal, brake right side short [message #313763 is a reply to message #313762] |
Fri, 24 February 2017 23:33 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Just another 'guess' for you. If you have a connector for a trailer it might be a good place to look. They are notorious for problems and an easy check. I always try to remember (much harder these days  ) anything I have done recently that might be even remotely associated with the problem. Just plugging in a trailer/toad may dislodge a loose wire. Just guessing from afar.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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