Home » Public Forums » GMCnet » Old buzz box wiring (hopefully an acceptable Revcon crossover question)
| Old buzz box wiring [message #65475] |
Tue, 24 November 2009 07:30  |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
Karma: 0
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Senior Member |
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My 1972 Revcon had an empty space there was an original non-working buzzbox but it was disconnected.
Pretty sure Revcon and GMC used the same early converter.
In the hole I found three sets of wires;
One is obviously AC, i connected the AC side of my converter to it.
The other pair was hot to the battery, i connected that,
The third is a heavy pair of wires with a smaller third green wire.
This set of wires appears to be AC - (with a third leg for ground)
That one is the mystery-
As i connected it everything works the way it's supposed to, the converter provides DC and charges the battery, etc
The generator provides power to a plug at the rear where the external power cord is connected. The Generator also provides 12V to the batteries
Yes, I realize it could be anything a previous owner added, removed or left behind, but so far this coach appears to be VERY original. It has very low mileage and hardy anything has been touched.
And there is no documentation.
But I'm a decent electrician and if I get a few good WAGS it will send me in the right direction.
Thanks
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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| Re: Old buzz box wiring [message #65496 is a reply to message #65475] |
Tue, 24 November 2009 09:22  |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Dave,
Have you looked at the wiring diagrams on bdubs site?
| hertfordnc wrote on Tue, 24 November 2009 07:30 |
My 1972 Revcon had an empty space there was an original non-working buzzbox but it was disconnected.
Pretty sure Revcon and GMC used the same early converter.
In the hole I found three sets of wires;
One is obviously AC, i connected the AC side of my converter to it.
The other pair was hot to the battery, i connected that,
The third is a heavy pair of wires with a smaller third green wire.
This set of wires appears to be AC - (with a third leg for ground)
That one is the mystery-
As i connected it everything works the way it's supposed to, the converter provides DC and charges the battery, etc
The generator provides power to a plug at the rear where the external power cord is connected. The Generator also provides 12V to the batteries
Yes, I realize it could be anything a previous owner added, removed or left behind, but so far this coach appears to be VERY original. It has very low mileage and hardy anything has been touched.
And there is no documentation.
But I'm a decent electrician and if I get a few good WAGS it will send me in the right direction.
Thanks
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: Old buzz box wiring [message #65498 is a reply to message #65475] |
Tue, 24 November 2009 09:31 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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Senior Member |
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>Hertfordnc wrote:
>One is obviously AC, i connected the AC side of my converter to it.
>The other pair was hot to the battery, i connected that,
>The third is a heavy pair of wires with a smaller third green wire.
The only reason I can think of having 2 sets of AC wires back there is for an inverter (line in and load out). It would have to have been a modification at some point if that were true, though. The DC 12v. wires would have to be much heavier than original in that case as well. One other thought, maybe something else was stuck in that area on a RevCon (like a GMC vacuum cleaner or some other appliance). Just a couple of thoughts.
Craig Lechowicz
'77 Kingsley, Waterford, MI
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| Re: Old buzz box wiring [message #65507 is a reply to message #65475] |
Tue, 24 November 2009 10:02 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| hertfordnc wrote on Tue, 24 November 2009 07:30 |
My 1972 Revcon had an empty space there was an original non-working buzzbox but it was disconnected.
Pretty sure Revcon and GMC used the same early converter.
In the hole I found three sets of wires;
One is obviously AC, i connected the AC side of my converter to it.
The other pair was hot to the battery, i connected that,
The third is a heavy pair of wires with a smaller third green wire.
This set of wires appears to be AC - (with a third leg for ground)
That one is the mystery-
As i connected it everything works the way it's supposed to, the converter provides DC and charges the battery, etc
The generator provides power to a plug at the rear where the external power cord is connected. The Generator also provides 12V to the batteries
Yes, I realize it could be anything a previous owner added, removed or left behind, but so far this coach appears to be VERY original. It has very low mileage and hardy anything has been touched.
And there is no documentation.
But I'm a decent electrician and if I get a few good WAGS it will send me in the right direction.
Thanks
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What gauge and color are the wires? That should give you a clue. If they are 14 or even 12 gauge and black, white, and green, then they are probably 120 VAC.
Also measure the wires to ground. If the green and white read 0 ohms to ground then again probably 120VAC.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Old buzz box wiring [message #65545 is a reply to message #65475] |
Tue, 24 November 2009 14:58 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Dave,
I checked:
http://autos.groups.yahoo.com/group/Revcon_Curious/
and can't see this question posted there, did I miss it?
They might be able to help more than the folks here can.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of dave silva
Sent: Wednesday, 25 November 2009 12:31 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Old buzz box wiring
My 1972 Revcon had an empty space there was an original non-working buzzbox
but it was disconnected.
Pretty sure Revcon and GMC used the same early converter.
In the hole I found three sets of wires;
One is obviously AC, i connected the AC side of my converter to it.
The other pair was hot to the battery, i connected that,
The third is a heavy pair of wires with a smaller third green wire.
This set of wires appears to be AC - (with a third leg for ground)
That one is the mystery-
As i connected it everything works the way it's supposed to, the converter
provides DC and charges the battery, etc
The generator provides power to a plug at the rear where the external power
cord is connected. The Generator also provides 12V to the batteries
Yes, I realize it could be anything a previous owner added, removed or left
behind, but so far this coach appears to be VERY original. It has very low
mileage and hardy anything has been touched.
And there is no documentation.
But I'm a decent electrician and if I get a few good WAGS it will send me in
the right direction.
Thanks
--
1972 Revcon 250- the other front wheel drive motorhome.
http://www.davesilva.com/revcon
Parting out 1974 GMC 26- http://www.davesilva.com/gmc
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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