Went and did my normal pre drive check. No brake lights. Found that the issue was the 39 year old brake light switch. Replaced that switch. Headed off to Elkhart. The Howell EFI worked PERFECTLY all the way. Great mileage. Got to within 45 miles of the GMCMI rally. The new brake light switch from China failed. Oh well. Got 500 miles out of it. Went to lower the right rear air bags to take a shower. T then the two compressor system quit working. Then during the night. Our furnace stopped working. I expected some of this because this GMC sat next to a cornfield in Iowa from Oct of 1995 to Oct of 2015. But now it appears that I've pissed off the electrical god EL. That has to be my problem. RIGHT? Bob Dunahugh 78 Royale Mouse House
Found the source of all my electrical issues. ?
- Thread starter Bob Dunahugh
- Start date
Bob, are you sure your alternator isn't putting out 20 volts?
Rick "sensing voltage-related failures" Denney
> Went and did my normal pre drive check. No brake lights. Found that the
> issue was the 39 year old brake light switch. Replaced that switch. Headed
> off to Elkhart. The Howell EFI worked PERFECTLY all the way. Great mileage.
> Got to within 45 miles of the GMCMI rally. The new brake light switch from
> China failed. Oh well. Got 500 miles out of it. Went to lower the right
> rear air bags to take a shower. T then the two compressor system quit
> working. Then during the night. Our furnace stopped working. I expected
> some of this because this GMC sat next to a cornfield in Iowa from Oct of
> 1995 to Oct of 2015. But now it appears that I've pissed off the
> electrical god EL. That has to be my problem. RIGHT? Bob Dunahugh 78
> Royale Mouse House
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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>
--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
Rick "sensing voltage-related failures" Denney
> Went and did my normal pre drive check. No brake lights. Found that the
> issue was the 39 year old brake light switch. Replaced that switch. Headed
> off to Elkhart. The Howell EFI worked PERFECTLY all the way. Great mileage.
> Got to within 45 miles of the GMCMI rally. The new brake light switch from
> China failed. Oh well. Got 500 miles out of it. Went to lower the right
> rear air bags to take a shower. T then the two compressor system quit
> working. Then during the night. Our furnace stopped working. I expected
> some of this because this GMC sat next to a cornfield in Iowa from Oct of
> 1995 to Oct of 2015. But now it appears that I've pissed off the
> electrical god EL. That has to be my problem. RIGHT? Bob Dunahugh 78
> Royale Mouse House
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
The problem could be that you are driving a 40+ year old house hundreds of
miles. Maybe.
Sully
77 eleganza 2
Bellevue.
> Went and did my normal pre drive check. No brake lights. Found that the
> issue was the 39 year old brake light switch. Replaced that switch. Headed
> off to Elkhart. The Howell EFI worked PERFECTLY all the way. Great mileage.
> Got to within 45 miles of the GMCMI rally. The new brake light switch from
> China failed. Oh well. Got 500 miles out of it. Went to lower the right
> rear air bags to take a shower. T then the two compressor system quit
> working. Then during the night. Our furnace stopped working. I expected
> some of this because this GMC sat next to a cornfield in Iowa from Oct of
> 1995 to Oct of 2015. But now it appears that I've pissed off the
> electrical god EL. That has to be my problem. RIGHT? Bob Dunahugh 78
> Royale Mouse House
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
miles. Maybe.
Sully
77 eleganza 2
Bellevue.
> Went and did my normal pre drive check. No brake lights. Found that the
> issue was the 39 year old brake light switch. Replaced that switch. Headed
> off to Elkhart. The Howell EFI worked PERFECTLY all the way. Great mileage.
> Got to within 45 miles of the GMCMI rally. The new brake light switch from
> China failed. Oh well. Got 500 miles out of it. Went to lower the right
> rear air bags to take a shower. T then the two compressor system quit
> working. Then during the night. Our furnace stopped working. I expected
> some of this because this GMC sat next to a cornfield in Iowa from Oct of
> 1995 to Oct of 2015. But now it appears that I've pissed off the
> electrical god EL. That has to be my problem. RIGHT? Bob Dunahugh 78
> Royale Mouse House
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
Check the load on the brake light circuit. Trailer wiring will add load when the trailer is there, and extra sources of problems all of the time. Best
to use relays for long distance trailering, but of course that adds complexity, and future failure points if not done correctly.
Put your ohmmeter on the cold side of the brake switch and see how little resistance to ground there is on that circuit.
--
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
to use relays for long distance trailering, but of course that adds complexity, and future failure points if not done correctly.
Put your ohmmeter on the cold side of the brake switch and see how little resistance to ground there is on that circuit.
--
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
> Bob, are you sure your alternator isn't putting out 20 volts?
>
> Rick "sensing voltage-related failures" Denney
Best $10 purchase for my GMC....instant voltmeter
https://www.amazon.com/gp/aw/d/B014MCRPT0/ref=mp_s_a_1_5?ie=UTF8&qid=1505876084&sr=8-5&pi=AC_SX236_SY340_QL65&keywords=12v+cigarette+lighter+voltmeter&dpPl=1&dpID=51%2Bo50QO-lL&ref=plSrch
--
Chris Geils - Twin Cities
1978 26' Kingsley w/ very few mods; Headers, Progressive Dynamics 9040, aux trans cooler, one repaint in stock colors, R134a, Al rad, 50k mi
>
> Rick "sensing voltage-related failures" Denney
Best $10 purchase for my GMC....instant voltmeter
https://www.amazon.com/gp/aw/d/B014MCRPT0/ref=mp_s_a_1_5?ie=UTF8&qid=1505876084&sr=8-5&pi=AC_SX236_SY340_QL65&keywords=12v+cigarette+lighter+voltmeter&dpPl=1&dpID=51%2Bo50QO-lL&ref=plSrch
--
Chris Geils - Twin Cities
1978 26' Kingsley w/ very few mods; Headers, Progressive Dynamics 9040, aux trans cooler, one repaint in stock colors, R134a, Al rad, 50k mi
