Home » Public Forums » GMCnet » [GMCnet] Battery isolator, front speakers
|
|
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312263 is a reply to message #312260] |
Wed, 18 January 2017 23:01   |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Ron,
The OEM-style diode isolator allows the chassis and house batteries to be
charged simultaneously by the engine driven alternator and prevents house
loads from discharging the chassis battery when the engine's not running.
That's an important job.
BUT, the 120vac converter can only charge the house battery -- not the
chassis battery (unless you manually connect the two batteries together --
a PITA). A combiner, on the other hand, performs the same functions as the
isolator with the added benefit that the converter will charge the chassis
battery from the converter, automatically.
The combiner also conserves a little bit of wasted energy since there's an
inherent 0.7VDC drop across the isolator's diodes. Since the combiner is
merely a mechanical relay driven by a voltage detecting circuit, there's no
power loss across it. The detection circuit closes the relay only when one
of the battery banks reaches charge voltage -- either from the alternator
or the converter.
My choice is the Yandina 160 (I upgraded after two warranty covered
failures of 100's. Here's a link: http://yandina.com/c160Info.htm
There are other manufacturers, but Yandina invented it and I've had no
experience with any of the others.
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, etc., etc., etc.
www.gmcwipersetc.com
On Wed, Jan 18, 2017 at 9:19 PM, ron preston wrote:
> Hi all,
> I need a new battery isolator for my 76 Glenbrook any suggestions?
> Also wondering of anyone has a replacement for the driver and passenger
> speaker / light assemblies/ grills.
> Mine are falling apart as I'm sure many others are.
> Thanks,
> Ron Preston
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312271 is a reply to message #312260] |
Thu, 19 January 2017 08:13 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
I wonder whether you could jack the output of the DC converter battery supply and feed it to the alternator post on the isolator, thereby charging both batteries in the same way the alternator does.
--johnny
Foolish Carriage, 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
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312274 is a reply to message #312271] |
Thu, 19 January 2017 08:36 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Johnny,
Since the converter does not have a remote voltage sense line, connecting
to the alternator input would leave the batteries undercharged. But
connecting the house and chassis batteries directly together, as the
combiner does, does allow the converter to charge both.
Ken H.
On Thu, Jan 19, 2017 at 9:13 AM, Johnny Bridges wrote:
> I wonder whether you could jack the output of the DC converter battery
> supply and feed it to the alternator post on the isolator, thereby charging
> both batteries in the same way the alternator does.
>
> --johnny
> --
> '76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and
> add - ons.
> Braselton, Ga.
> "The road goes on forever, and the party never ends" --Robert Earl Keen
>
> _______________________________________________
> 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
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
|
|
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312276 is a reply to message #312260] |
Thu, 19 January 2017 09:27 |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
|
Senior Member |
|
|
ron preston wrote on Wed, 18 January 2017 21:19Hi all,
I need a new battery isolator for my 76 Glenbrook any suggestions?
Also wondering of anyone has a replacement for the driver and passenger
speaker / light assemblies/ grills.
Mine are falling apart as I'm sure many others are.
Thanks,
Ron Preston
Ron,
Isolators are not a high failure item. I did tons of work on other people's people's boats before the depression and replaced lots of isolators and combiners. If you look on Ebay, you can usually find them inexpensively. If you want service after the sale - JimK. Yandina Combiner are good, but many die from being over taxed and the contacts can go bad (remember I was working on boats - performance cruisers for the larger part). Things corrode there.
Either is a good fix.
If you go with an isolator but want to charge the main engine battery every once and a while, get a jumper to put on the screws. Yes, there is a 0.6V loss because of the diode junction, but the remote sense feature of the alternator makes that a non-issue.
The only downside of a combiner - other than outright failure as noted - is that if the main engine battery degrades, it can pull down the system voltage enough to keep the house bank from reaching full density. That has been a rare issue.
As to speakers. I may not hear well, but I still hear stereo. Early in our GMC experience, I needed light in the cab. I fixed both like this. Unfortunately, those really good 4X6 triaxial are no longer available. I made my own plates. That center light is great, but the red bulb (for use during night driving) has died again and I want to replace it with LED this next time.
http://www.gmcmhphotos.com/photos/speakers/p35249-where-i-put-new-speakers.html
This allows us to both listen to traveling music and still have a discussion.
Matt
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
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312278 is a reply to message #312271] |
Thu, 19 January 2017 09:45 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
|
Senior Member |
|
|
Or you can buy a "smart" converter that has outputs to charge more than one battery bank but leave them isolated. My
Starpower TruCharge 40 has 3 outputs but I am only using two. One for the engine battery and one for the house battery bank. I can leave it plugged in all the time when in storage as it will not overcharge nor boil out the water.
Emery Stora
77 Kingsley
Frederick, CO
> On Jan 19, 2017, at 7:13 AM, Johnny Bridges wrote:
>
> I wonder whether you could jack the output of the DC converter battery supply and feed it to the alternator post on the isolator, thereby charging
> both batteries in the same way the alternator does.
>
> --johnny
> --
> '76 23' transmode Norris upfit, 76 26' Eleganza(?) with beaucoup mods and add - ons.
> Braselton, Ga.
> "The road goes on forever, and the party never ends" --Robert Earl Keen
>
> _______________________________________________
> 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
|
|
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312282 is a reply to message #312271] |
Thu, 19 January 2017 10:34 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
|
Senior Member |
|
|
why do you need to charge the engine battery when parked? If it is a long duration parking (3 months or more) then maybe you would like to top it off. But for normal use why bother?
The simple solution to a long term parked situation is to install a $1.00 combiner between the top and bottom terminals of the isolator. Use a thin gauge wire in case you get a shorted battery on one side or the other. If that were to happen it would just burn the wire in half like a fusible link. I have two of these made up and kept near the isolator but disconnected. I have never needed to use either one of them.
Actually this one is a $.48 combiner.
http://www.ebay.com/itm/10pcs-20-Double-ended-Crocodile-Clip-Alligator-Test-Jumper-Probe-Lead-Wire-USA-/111813013958
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312285 is a reply to message #312260] |
Thu, 19 January 2017 11:02 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
Ken, note the phrase 'jack the output'. You'd need to t6run it up enough to overcome the loss across the isolator diode to each battery. ~~ half a volt, depends on diode type, but it's measurable.
--johnny
Foolish Carriage, 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
|
|
|
|
| Re: [GMCnet] Battery isolator, front speakers [message #312287 is a reply to message #312260] |
Thu, 19 January 2017 11:19 |
 |
SteveW
Messages: 538
Registered: June 2005
Location: Southern California - Ora...
Karma: 1
|
Senior Member |
|
|
Greetings !
I have the walnut replacement cockpit lights/speakers from Justin at thegmcrv.com.
They look fantastic.
The light is pretty bright though... I intend to get a dimmer on them.
Hope this helps,
Steve W
1973 23'
Southern California
Steve W
1973 : 23'
Southern California
|
|
|
|
Goto Forum:
Current Time: Sun Sep 29 00:16:14 CDT 2024
Total time taken to generate the page: 0.00919 seconds
|
GMCforum
Search
Help
Register
Login
Home
There was a forum topic discussing this a few months ago. I think someone made them out of walnut.