| access behind dash [message #83741] |
Sat, 08 May 2010 22:45  |
jayrabe
Messages: 509
Registered: June 2009
Location: Portland, OR
Karma: 0
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Senior Member |
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OK, now for the next problem. My stereo doesn't work. No power. I've lost touch with the PO, but from what I remember, he had originally wired it up with always-on power, ie the ignition didn't need to be on, but after draining his battery a couple of times from leaving it on after parking, I think he disconnected the power somewhere. The problem is that I can't trace the wiring to find where he connected/disconnected it. I've tried to get the dash panel off to follow the wiring, but can't figure out how to do that. The best I've managed is:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=33834&title=dash01&cat=5355
http://www.gmcmhphotos.com/photos/showphoto.php?photo=33835&title=dash02&cat=5355
What's the trick? Do I have to pull the steering column? Thanks for any advice.
J
76 PB
Portland, OR
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| Re: access behind dash [message #83743 is a reply to message #83741] |
Sat, 08 May 2010 22:55  |
Rick Denney
Messages: 430
Registered: January 2004
Karma: 0
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| jayrabe wrote on Sat, 08 May 2010 23:45 |
I've tried to get the dash panel off to follow the wiring, but can't figure out how to do that.
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Don't go in through the front. Instead, remove the hard plastic cover on the backside of the instrument pod. You may have to trim the lip of it on the upper left side to get it out of there, but you'll be glad you did many times going into the future.
That will give you complete access to the wiring behind the dash, though you may have to study things through the windshield for a bit.
Rick "and there is a screw on the left side requiring a right-angle screwdriver" Denney
'73 Glacier 230 "Jaws"
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| Re: [GMCnet] access behind dash [message #83746 is a reply to message #83741] |
Sat, 08 May 2010 23:04 |
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That appears to be a McNeal dash and is slightly different from the
original. With the original you would have screws across the top, for
starters. Then the light switch would need to be separated.
Contact Mac and see if he has some suggestion on how to proceed. He may be
able to send you an installation manual.
http://www.custominstrumentpanels.com/gmc.htm
Byron Songer
1978 Royale by Coachmen
Louisville, KY
Personal - http://web.me.com/bnsonger
Eastern States - http://www.gmceast.com
Jay Rabe wrote:
>
>
> OK, now for the next problem. My stereo doesn't work. No power. I've lost
> touch with the PO, but from what I remember, he had originally wired it up
> with always-on power, ie the ignition didn't need to be on, but after draining
> his battery a couple of times from leaving it on after parking, I think he
> disconnected the power somewhere. The problem is that I can't trace the wiring
> to find where he connected/disconnected it. I've tried to get the dash panel
> off to follow the wiring, but can't figure out how to do that. The best I've
> managed is:
>
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=33834&title=dash01&cat=5
> 355
>
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=33835&title=dash02&cat=5
> 355
>
> What's the trick? Do I have to pull the steering column? Thanks for any
> advice.
>
> J
> 76 PB
> Portland, OR
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
--
Byron Songer
Full-timing to enjoy the USA
Former owner but still an admirer
GMC paint schemes at -
http://www.songerconsulting.net
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| Re: [GMCnet] access behind dash [message #83748 is a reply to message #83743] |
Sat, 08 May 2010 23:13 |
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Somewhere on the photo site is a picture of the notch you'll need to create
to get the back off. It'll be on the upper left side. I used a small hand
saw to create my "lip".
I've searched the site and can't find the photo that shows it very clearly.
I used "dash" for the search term but that didn't work.
Byron Songer
1978 Royale by Coachmen
Louisville, KY
Personal - http://web.me.com/bnsonger
Eastern States - http://www.gmceast.com
Rick Denney wrote:
>
>
> jayrabe wrote on Sat, 08 May 2010 23:45
>> I've tried to get the dash panel off to follow the wiring, but can't figure
>> out how to do that.
>
>
> Don't go in through the front. Instead, remove the hard plastic cover on the
> backside of the instrument pod. You may have to trim the lip of it on the
> upper left side to get it out of there, but you'll be glad you did many times
> going into the future.
>
> That will give you complete access to the wiring behind the dash, though you
> may have to study things through the windshield for a bit.
>
> Rick "and there is a screw on the left side requiring a right-angle
> screwdriver" Denney
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
--
Byron Songer
Full-timing to enjoy the USA
Former owner but still an admirer
GMC paint schemes at -
http://www.songerconsulting.net
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| Re: [GMCnet] access behind dash [message #83754 is a reply to message #83741] |
Sun, 09 May 2010 00:59 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Senior Member |
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I snaked a hot wire through the firewall attached to the battery isolator and connected it to an on/off switch. Both power leads for the radio go to this switch. The radio now plays off of the house battery.
The only problem is that I have to reset the clock when I turn off the switch! I did use an inline fuse for this.
Larry Davick
Sent from my iPad
On May 8, 2010, at 8:45 PM, Jay Rabe <jayrabe@hotmail.com> wrote:
>
>
> OK, now for the next problem. My stereo doesn't work. No power. I've lost touch with the PO, but from what I remember, he had originally wired it up with always-on power, ie the ignition didn't need to be on, but after draining his battery a couple of times from leaving it on after parking, I think he disconnected the power somewhere. The problem is that I can't trace the wiring to find where he connected/disconnected it. I've tried to get the dash panel off to follow the wiring, but can't figure out how to do that. The best I've managed is:
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=33834&title=dash01&cat=5355
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=33835&title=dash02&cat=5355
>
> What's the trick? Do I have to pull the steering column? Thanks for any advice.
>
> J
> 76 PB
> Portland, OR
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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