Front turn signals and side markers

[emerystora]

My front turn signal, parking lights and side markers stopped working. The rears are fine.

Probably a connector under the dash loosened.

Anyone know where I should look?

Thanks.

Emery Stora
77 Kingsley
Frederick, CO

 

[sgltrac]

I would look for a ground.

Sully
Bellevue wa

On Fri, Aug 24, 2018 at 4:19 PM Emery Stora via Gmclist <

> My front turn signal, parking lights and side markers stopped working.
> The rears are fine.
>
> Probably a connector under the dash loosened.
>
> Anyone know where I should look?
>
> Thanks.
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[john phillips]

Use a meter to see if it is the ground or the supply side.

> I would look for a ground.
>
> Sully
> Bellevue wa
>
> On Fri, Aug 24, 2018 at 4:19 PM Emery Stora via Gmclist <

>
> > My front turn signal, parking lights and side markers stopped working.
> > The rears are fine.
> >
> > Probably a connector under the dash loosened.
> >
> > Anyone know where I should look?
> >
> > Thanks.
> >
> > Emery Stora
> > 77 Kingsley
> > Frederick, CO
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>

--

*John Phillips*

 

[Matt Colie]

> My front turn signal, parking lights and side markers stopped working. The rears are fine.
>
> Probably a connector under the dash loosened.
>
> Anyone know where I should look?
>
> Thanks.
>
> Emery Stora

Emery,

On my coach, in both front markers the lamp socket lost its connection to the reflector and hence the ground for the whole thing. I ended up
soldering a lead to the socket so I could put in under the mounting fastener with the original ground. That was years ago and they are still
working.

Matt (Finally has a coach ready to travel - again)
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit

 

[richard h staples]

Emery,
Squinting at the 77-78 Transmode diagram for a while, I see both park/turn lamps have a separate ground wire (18ga black) running to the "electrical
equip. panel ground", which I think is that aluminum plate under the right front hatch where the boost solenoid is mounted. Diagram shows both of
them attaching to the same point where the headlight grounds attach, from whence a 10ga wire runs to chassis (frame?) ground. I'd look there first as
being the only point in common with both park and turn lamp circuits.
The turn signal power comes through the 40-pin harness connector ("inst. panel harness to engine harness and forward lamp harness"), located at the
"engine compartment dash panel, upper RH side". (Left turn cavity CU, Rt turn cavity BU, park lights cavity BV.) Clear as mud, eh? FWIW, the turn
indicator lamps in the dash are powered from the front turn circuits, so if they work, you can assume the turn signal switch and its connector are OK.

Just one more thought here: since the side marker lamps ground THROUGH the turn signal bulb so they will flash when the turn signal is used, strange
and dysfunctional things happen if you try to use LED bulbs in any of these places.
HTH
Rick Staples
'75 Eleganza

--
Rick Staples, '75 Eleganza, Johnstown, CO

"Advice is a dangerous gift, even from the Wise to the Wise, and all paths may run ill." -Tolkien

 

[emerystora]

>
> Emery,
> Squinting at the 77-78 Transmode diagram for a while, I see both park/turn lamps have a separate ground wire (18ga black) running to the "electrical
> equip. panel ground", which I think is that aluminum plate under the right front hatch where the boost solenoid is mounted. Diagram shows both of
> them attaching to the same point where the headlight grounds attach, from whence a 10ga wire runs to chassis (frame?) ground. I'd look there first as
> being the only point in common with both park and turn lamp circuits.
> The turn signal power comes through the 40-pin harness connector ("inst. panel harness to engine harness and forward lamp harness"), located at the
> "engine compartment dash panel, upper RH side". (Left turn cavity CU, Rt turn cavity BU, park lights cavity BV.) Clear as mud, eh? FWIW, the turn
> indicator lamps in the dash are powered from the front turn circuits, so if they work, you can assume the turn signal switch and its connector are OK.
>
> Just one more thought here: since the side marker lamps ground THROUGH the turn signal bulb so they will flash when the turn signal is used, strange
> and dysfunctional things happen if you try to use LED bulbs in any of these places.
> HTH
> Rick Staples
> '75 Eleganza
>
Stupid me! I spent two days tracing wires and connectors thinking that I might have pulled something when working under the dash.
Finally I pulled the lenses from the left and right turn signal lights and found that both bulbs were burned out!!!!

I should have checked that out first.

After replacing the bulbs everything works fine.

Thanks for suggestions everyone.

Emery Stora
77 Kingsley
Frederick, CO

 

[sgltrac]

Hahaaaa! Been there, done that. “Can’t possibly have two burned out bulbs
at the same time”

Sully
Bellevue

On Mon, Aug 27, 2018 at 5:02 PM Emery Stora via Gmclist <

>
>
> > On Aug 25, 2018, at 8:47 PM, Richard H Staples

> >
> > Emery,
> > Squinting at the 77-78 Transmode diagram for a while, I see both
> park/turn lamps have a separate ground wire (18ga black) running to the
> "electrical
> > equip. panel ground", which I think is that aluminum plate under the
> right front hatch where the boost solenoid is mounted. Diagram shows both
> of
> > them attaching to the same point where the headlight grounds attach,
> from whence a 10ga wire runs to chassis (frame?) ground. I'd look there
> first as
> > being the only point in common with both park and turn lamp circuits.
> > The turn signal power comes through the 40-pin harness connector ("inst.
> panel harness to engine harness and forward lamp harness"), located at the
> > "engine compartment dash panel, upper RH side". (Left turn cavity CU,
> Rt turn cavity BU, park lights cavity BV.) Clear as mud, eh? FWIW, the turn
> > indicator lamps in the dash are powered from the front turn circuits, so
> if they work, you can assume the turn signal switch and its connector are
> OK.
> >
> > Just one more thought here: since the side marker lamps ground THROUGH
> the turn signal bulb so they will flash when the turn signal is used,
> strange
> > and dysfunctional things happen if you try to use LED bulbs in any of
> these places.
> > HTH
> > Rick Staples
> > '75 Eleganza
> >
> Stupid me! I spent two days tracing wires and connectors thinking that I
> might have pulled something when working under the dash.
> Finally I pulled the lenses from the left and right turn signal lights and
> found that both bulbs were burned out!!!!
>
> I should have checked that out first.
>
> After replacing the bulbs everything works fine.
>
> Thanks for suggestions everyone.
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

 

[jim kanomata1]

Emory,
If you did not tell us that, I would not have believed that you did that.
I hate to tell people all the misdiagose I have done lately.
It comes with age, but when we can admit and grin, were in good shape.

> Hahaaaa! Been there, done that. “Can’t possibly have two burned out bulbs
> at the same time”
>
> Sully
> Bellevue
>
> On Mon, Aug 27, 2018 at 5:02 PM Emery Stora via Gmclist <

>
> >
> >
> > > On Aug 25, 2018, at 8:47 PM, Richard H Staples

> > >
> > > Emery,
> > > Squinting at the 77-78 Transmode diagram for a while, I see both
> > park/turn lamps have a separate ground wire (18ga black) running to the
> > "electrical
> > > equip. panel ground", which I think is that aluminum plate under the
> > right front hatch where the boost solenoid is mounted. Diagram shows
> both
> > of
> > > them attaching to the same point where the headlight grounds attach,
> > from whence a 10ga wire runs to chassis (frame?) ground. I'd look there
> > first as
> > > being the only point in common with both park and turn lamp circuits.
> > > The turn signal power comes through the 40-pin harness connector
> ("inst.
> > panel harness to engine harness and forward lamp harness"), located at
> the
> > > "engine compartment dash panel, upper RH side". (Left turn cavity CU,
> > Rt turn cavity BU, park lights cavity BV.) Clear as mud, eh? FWIW, the
> turn
> > > indicator lamps in the dash are powered from the front turn circuits,
> so
> > if they work, you can assume the turn signal switch and its connector are
> > OK.
> > >
> > > Just one more thought here: since the side marker lamps ground THROUGH
> > the turn signal bulb so they will flash when the turn signal is used,
> > strange
> > > and dysfunctional things happen if you try to use LED bulbs in any of
> > these places.
> > > HTH
> > > Rick Staples
> > > '75 Eleganza
> > >
> > Stupid me! I spent two days tracing wires and connectors thinking that I
> > might have pulled something when working under the dash.
> > Finally I pulled the lenses from the left and right turn signal lights
> and
> > found that both bulbs were burned out!!!!
> >
> > I should have checked that out first.
> >
> > After replacing the bulbs everything works fine.
> >
> > Thanks for suggestions everyone.
> >
> > Emery Stora
> > 77 Kingsley
> > Frederick, CO
> >
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502

 

[johnny]

Emery, now you know where all those wires are, anyway.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased