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Date:         Wed, 13 Mar 2013 18:56:50 -0400
Reply-To:     Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject:      Re: Alliance Deep Cycle? (Grp. 27) Wire To Alternator?
Comments: To: Rocket J Squirrel <camping.elliott@GMAIL.COM>
In-Reply-To:  <5140F969.5060509@gmail.com>
Content-Type: text/plain; charset="UTF-8"

That circuit on the alternator is really not designed to carry that much of a load. Keep in mind there is no fuse so if one of those relay coils shorts out either the blue wire is burning up or the alternator is. Also, since you are using relays with two terminals on the coil you may be able to let one connect to ground through the starter solenoid. This will "kick" back the alternator circuit for that instant kick in. You just have to be careful and do some testing to make sure these relays do not carry enough current to prevent the starter solenoid from completely releasing.

I would consider using an original style relay to control the two Stancors.

Dennis

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Rocket J Squirrel Sent: Wednesday, March 13, 2013 6:11 PM To: vanagon@GERRY.VANAGON.COM Subject: Re: Alliance Deep Cycle? (Grp. 27) Wire To Alternator?

"[...] you may need to rev the engine a bit higher than normal to get the alternator kicked in due to the different coil loading the activation-warning light circuit."

Second that. I have two (2) Stancor 120-901 "contactors" (relays) connected to the blue wire (one of which connects the alternator to the cabin battery, the other provides an auxilary +12V for a control voltage for another application). Each contactor needs 3/4A to pull in for a total of 1-1/2 amps. I have to goose the engine a bit after starting to get the alternator light to go out and pull in the contactors.

BTW, these Stancor parts have been very very reliable but have exposed terminals which makes it important to make sure that nothing can short against them. Data sheet at <http://www.stancor.com/pdfs/Catalog_2006/Pg_052_53.pdf>. See them big posts on the top of part? That's where your battery and alternator get connected.

-- Jack "Rocket j Squirrel" Elliott 1984 Westfalia, auto trans, Bend, Ore.

On 03/13/2013 01:10 PM, Dennis Haynes wrote: > Be careful. Starter solenoids are only designed for short term (30 > second) operation. The coil will burn out. Be sure to get one for > continuous duty. For a Westy the blue wire for the fridge relay will > work although you may need to rev the engine a bit higher than normal > to get the alternator kicked in due to the different coil loading the > activation-warning light circuit. > > Dennis, And I still can't type on this Windows 8 Phone! > ________________________________ From: neil > n<mailto:musomuso@GMAIL.COM> Sent: ‎3/‎13/‎2013 2:43 PM To: > vanagon@GERRY.VANAGON.COM<mailto:vanagon@GERRY.VANAGON.COM> Subject: > Re: Alliance Deep Cycle? (Grp. 27) Wire To Alternator? > > Thanks very much Dennis. This is what I had hoped. Had found "double" > relay images and now see this "can" type diagram (though for > starter) > http://www.hqew.net/files/Images/Article/Circuit_Diagram/BasicSolenoid > CircuitDiagram_thumb.png > > I see the two air gaps. > > I'll be curious to see how much current this "can" type draws. > > Neil. > > On Wed, Mar 13, 2013 at 11:36 AM, Dennis Haynes > <d23haynes57@hotmail.com> wrote: >> The can type relays are double break type. What that means is there >> are two air gaps when they open. Arc suppression and better chance of

>> the circuit opening. >> >> Dennis, And I still can't type on this Windows 8 Phone! >> ________________________________ From: neil >> n<mailto:musomuso@gmail.com> Sent: 3/13/2013 1:28 PM To: Dennis >> Haynes<mailto:d23haynes57@hotmail.com> Cc: >> vanagon@GERRY.VANAGON.COM<mailto:vanagon@gerry.vanagon.com> >> Subject: Re: Alliance Deep Cycle? (Grp. 27) Wire To Alternator? >> >> Way cool re: Alliance. Much less $ than a Trojan SCS150 >> http://www.trojanbattery.com/Products/SCS15012V.aspx >> >> I'll google "double break relay". Would a "can" type solenoid >> isolator suffice instead? They were on sale at Princess Auto. >> ;^) I will fuse charge line and load line to fridge. >> >> The existing driver side aux. battery solenoid "can" type isolator is

>> actuated by the alternator blue wire (D+) >> >> Easy to measure the "can" isolator current draw, but blue wire gauge >> aside, will the (presumably) higher current demands of 2 "can" type >> battery isolators etc. adversely affect the alternator regulator? >> >> Thanks >> >> Neil. >> >> On Wed, Mar 13, 2013 at 5:21 AM, Dennis Haynes >> <d23haynes57@hotmail.com> wrote: >> >>> The Alliance brand is reasonably priced even at the Freightliner >>> dealer. BTW an 8 gauge charge line is ideal. Use a good size double >>> break relay and be sure to control it so the relay is not closed >>> while cranking the engine. Otherwise that line will see some starter

>>> current. Consider some type of over current protection. You have >>> power on both sides. I like fusible links. >>> Cheap and easy. >>> >>> Dennis, And I still can't type on this Windows 8 Phone! >>> ________________________________ From: neil n Sent: 3/13/2013 >>> 1:46 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: Alliance Deep >>> Cycle? (Grp. 27) Wire To Alternator? >> >> >>> At $125.96 Cnd. for a group 27, I have to wonder if it's the same >>> battery as the Alliance you write of. >> >> >> >> -- Neil n >> >> 65 kb image Myford Ready For Assembly http://tinyurl.com/64sx4rp >> >> '88 Slate Blue Westy to be named. >> >> '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/ >> >> Vanagon VAG Gas I4/VR Swap Google Group: >> >> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas >> -engines > >> > > > -- Neil n > > 65 kb image Myford Ready For Assembly http://tinyurl.com/64sx4rp > > '88 Slate Blue Westy to be named. > > '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/ > > Vanagon VAG Gas I4/VR Swap Google Group: > > http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas- > engines >


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