| Turn signal issue [message #265044] |
Tue, 28 October 2014 21:07  |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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On a short weekend jaunt this past weekend I noticed the left turn signal decided to go on vacation. The mirror has a light that would flash but neither the front or rear lights worked. I'm assuming there must be a splice where the mirrors were connected and it's gone away but haven't located the splice yet. Has anyone experienced a similar issue or may suggest a different approach?
Thanks,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: Turn signal issue [message #265064 is a reply to message #265044] |
Wed, 29 October 2014 09:08  |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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Do you have a copy of the GMC wiring diagram? Tracing wires is always fun. If installer used the "crimp on" type of wire connectors that cut the insulation and grip the wire, that is the most logical fault location. I personally hate this type of connector.
Do the emergency flashers flash all the lights? Quick test to find a defective lamp. Did you check both the flasher and the fuses? Start with the easy answers first.
Wish that I could help further.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: Turn signal issue [message #265066 is a reply to message #265044] |
Wed, 29 October 2014 09:41 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Re: Turn signal issue
Hal,
When I started planning to put turn lights on the mirrors, I found the conductors available but under the instrument panel and out at the front marker lights. But, in your case, I would (as Tom suggested) do the 4-Way test first. If any are out, check the bulbs first. I am forever cleaning and greasing mine to keep them working.
It is unlikely the a Scotchlok (cheap connector you crush over a wire) would cause the problem you are seeing. But, if you find any, take the time to re-do the job right.
Matt
Hal StClair wrote on Tue, 28 October 2014 22:07On a short weekend jaunt this past weekend I noticed the left turn signal decided to go on vacation. The mirror has a light that would flash but neither the front or rear lights worked. I'm assuming there must be a splice where the mirrors were connected and it's gone away but haven't located the splice yet. Has anyone experienced a similar issue or may suggest a different approach?
Thanks,Hal
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: Turn signal issue [message #265071 is a reply to message #265066] |
Wed, 29 October 2014 10:16 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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Thanks guys, I've done the basic checks already, fuse, flasher, lamps. I was just hoping there might be a common issue that crops up on these things that might be an issue. I also hate the scotch lock taps and almost never use them but it seems the connector would have had to cut the wire in half to cause the problem. It's just a matter of finding the splice at this time I'm afraid. Guess I'll be pulling the dash apart earlier than expected....
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 issue [message #265086 is a reply to message #265071] |
Wed, 29 October 2014 14:29 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Corrosion on the bulb and or sockets or bad grounds at the lamps would be my first n second checks. Fuse ok cause the one in the mirror would not work otherwise.
Todd Sullivan
Sully
77 royale
Seattle
> On Oct 29, 2014, at 8:16 AM, Hal StClair wrote:
>
> Thanks guys, I've done the basic checks already, fuse, flasher, lamps. I was just hoping there might be a common issue that crops up on these things
> that might be an issue. I also hate the scotch lock taps and almost never use them but it seems the connector would have had to cut the wire in half
> to cause the problem. It's just a matter of finding the splice at this time I'm afraid. Guess I'll be pulling the dash apart earlier than
> expected....
> Hal
> --
> 1977 Royale 101348,
>
> 1977 Royale 101586,
>
> 1974 Eagle Bus 45',w/slideout
> _______________________________________________
> GMCnet mailing list
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Turn signal issue [message #265097 is a reply to message #265086] |
Wed, 29 October 2014 18:38 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
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Senior Member |
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Exercise that emergency flasher switch a few times to make sure that is not the problem. BTDT on many vehicles that didn't have the 40 year old grease in the switch, and sometimes a touch of WD-40 can re-liquify that grease and allow the contacts to contact.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
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