Dual battery diagram missing

SamboSamba22 · Posted: Wed Sep 28, 2016 2:09 pm Post subject: Re: Dual battery diagram missing

So the auxiliary battery needs to be grounded via a battery strap to the body of the bus? Just ordered the Hella Kit from Bus Depot since it was a complete guessing game with German Supply.
Arrival will be tomorrow, so I am looking to hook up aux battery tomorrow afternoon.
Also if in line fuses are used, is the need of an additional fuse box still needed?
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The Bus Barn Ltd. Co.

Oct. ’67 Double Cab (’68 Crew Cab)
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Tcash · Posted: Sun Sep 25, 2016 2:26 pm Post subject: Re: Dual battery diagram missing

You should replace batteries in pairs.
Batteries

http://www.thesamba.com/vw/forum/viewtopic.php?p=7940278#7940278

Battery Install with Perko - Aux. Battery+Auxiliary Battery

Tcash

SamboSamba22 · Posted: Sun Sep 25, 2016 1:31 pm Post subject: Re: Dual battery diagram missing

Im in the process of doing this myself. My Westy had it originally, as the rusted relay is still present, and there has the factory splice off the main battery terminal.
I'm in the waiting line for German Supply to finish fabbing some relay kits, as of yesterday they are still out. All I was told was itd be at least two weeks. Bus Depot is my go to for practically everything, is their Hella kit really subpar to Scott's kit?
Also as long as both batteries are liquid types with relatively the same CCA's (450-the other 600 CCA's), do I have the okay to charge my system effectively and safely?
Should I place the platter battery for the main, and the lower one for the secondary or vice-versa?
_________________
The Bus Barn Ltd. Co.

Oct. ’67 Double Cab (’68 Crew Cab)
[url=http://www.vw-mplate.com/mplate-44412.png]Click to view image[/URL]
March '69 Delivery (Panel Bus)
[url=http://www.vw-mplate.com/mplate-44414.png]Click to view image[/URL]

aeromech · Posted: Fri Apr 12, 2013 11:24 am Post subject:

You want the dual batteries set up so all of your auxillary loads run off the house battery saving your start battery for getting home. You should use a deep cycle battery for the house. Both batteries need to be the same type such as lead acid.

stereo
dome lights
power plugs
CO detector
etc.

These should all be connected to the house battery.
_________________
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Boesen · Posted: Fri Apr 12, 2013 11:18 am Post subject:

Thanks Aeromech. I'm fine without the fridge. Icebox works great for our weekend trips/shows. It's the light, and sink pump I'd like to use. Been just using battery op lamps, and when hooked up with shore power a small lamp. The when the water is hooked to external hookup, sink works fine. Don't plan to use the water tank, but never know. Just want the aux battery for those weekends that we are nowhere near any hookups.
_________________
1979 Westfalia Deluxe http://www.thesamba.com/vw/forum/viewtopic.php?t=474334&highlight=iowa

aeromech · Posted: Fri Apr 12, 2013 11:11 am Post subject:

I've been told that you can get a 12 volt refrigerator. Supposed to be much better than trying to run a 120 volt using an inverter.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

Boesen · Posted: Fri Apr 12, 2013 11:04 am Post subject:

Have a 79 Weetfalia Deluxe. Finally after three years of ownership going to get the aux. battery setup up and running. There is still the stock setup with the relay and wiring between the two batteries, battery cables are still there. I recently bought the German Supply Aux Battery kit just in case.

Now here are a few questions I have. Previous Owner had removed fridge due to "cooling issues with it" and converted to icebox. He also removed the Power Invertor that was under the seat. None of them he saved! Crying or Very sad

I've camped in it a thousand times just using shore power though, so outlets work. Question being was the Aux Battery just for fridge? For Fridge and Interior light above stove? For Fridge, Interior Light, and Sink pump? Do I need that or another Inverter before proceeding with getting it going on Aux Power? I'll snap some photos here shortly of the system that's still in it.
_________________
1979 Westfalia Deluxe http://www.thesamba.com/vw/forum/viewtopic.php?t=474334&highlight=iowa

Stuartzickefoose · Posted: Thu Mar 29, 2012 12:55 pm Post subject:

THANK YOU SCOTT!!!! this worked perfect, now i got my radio running off my second battery and i have all my second battery stuff set up and working as it should (so far, need a new deep cell battery and a new battery tray still....)
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[email protected]

telford dorr · Posted: Tue Oct 11, 2011 10:49 am Post subject:

"Buy the best and cry once" - Gene Berg
_________________
'71 panel, now with FI
'Experience' is the ability to recognize a mistake when you're making it again - Franklin P. Jones
In theory, theory works in practice; in practice, it doesn't - William T. Harbaugh
When you're dead, you don't know you're dead. The pain is only felt by others.
Same thing happens when you're stupid. - Philippe Geluck
More VW electrical at http://telforddorr.com/ (available 9am to 9pm PST)

aeromech · Posted: Tue Oct 11, 2011 10:17 am Post subject:

Hey Telford. What was that saying? How does it go? Something like "when you buy quality, you only cry once"
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

telford dorr · Posted: Tue Oct 11, 2011 9:47 am Post subject:

volksheads · Posted: Tue Oct 11, 2011 7:51 am Post subject:

ran the test as you suggested this morning. When the 87 wire is disconnected the alt. warning light on the dash stays on when the motor is running. This suggests the problem is with the relay? test voltage across 85 and 86 terminals and got 4.40 V when running.
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May 20th, 2023 - CTS #20!

'53 Single Cab
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telford dorr · Posted: Mon Oct 10, 2011 2:49 pm Post subject:

Try disconnecting wire #87 instead, such that the relay operates but the aux battery is disconnected. If the ALT light now functions normally, then there's something wrong with the aux battery or its connections. If it still stays lit, then there's something wrong with the aux battery relay, its connections, or the alternator system. Measure the voltage from 86 to 85 and post here. Divide and conquer.
_________________
'71 panel, now with FI
'Experience' is the ability to recognize a mistake when you're making it again - Franklin P. Jones
In theory, theory works in practice; in practice, it doesn't - William T. Harbaugh
When you're dead, you don't know you're dead. The pain is only felt by others.
Same thing happens when you're stupid. - Philippe Geluck
More VW electrical at http://telforddorr.com/ (available 9am to 9pm PST)

volksheads · Posted: Mon Oct 10, 2011 2:18 pm Post subject:

Today I wired up an auxiliary battery in a 74 westy per the diagram in this thread with the Bosch relay and 10-14 gauge wire.
When I do, the alternator warning light won't go out when the car is running. When I disconnect terminal 86 from the Bosch relay - it does go out...
I was just curious if anyone had any thoughts on what the problem might be.
_________________
MonkeyNut VW - www.monkeynutvw.com

Piedmont Transporter Owners (PTO)
Home of CTS (Charlotte Transporter Show)
May 20th, 2023 - CTS #20!

'53 Single Cab
'65 Walkthrough Sunroof Standard
'71 Double Cab w/ '64 Heilite Single Wheel

jpstewart19 · Posted: Mon Aug 15, 2011 9:45 am Post subject:

Follow AeroMechs suggestion above. After much deliberation and help from him, I was going to go with his marie setup. However in the end, I ended up chickening out and going the cheap route with the Hella BD kit. Once aeromech set me straight on how it functions, installing the kit using Scott's German Supply instructions was a breeze. It's all in the diagram above.

I would have bought Scott's kit if at the time it was showing in stock, as I do think it's design is slightly better.
_________________
1985 Vanagon Westfalia Subie
1972 Super Beetle Convertible
1990 Vanagon GL "Winston" (Sold)
1980 Vanagon Westfalia “Rusty” (Sold)
1982 Vanagon Westfalia “Rusty II” (Sold)
1977 Smurf Blue Campmobile (Sold)

aeromech · Posted: Mon Aug 08, 2011 8:28 am Post subject:

Scott posted this:

Image may have been reduced in size. Click image to view fullscreen.

Find the wire that runs up front (K2) and gives you the alternator idiot light. Then just hook the 86 up to it as in the picture. I believe it will be a short (6 inch) blue wire near your firewall right front lower corner.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

gratefulbuses · Posted: Mon Aug 08, 2011 8:16 am Post subject:

gratefulbuses · Posted: Sun Aug 07, 2011 9:53 am Post subject:

I have a 77 Westy and bought a Bus Depot relay kit inorder to hook up an AUX battery. After reading more and more, I decided to buy/use a heavier 12 gauge wire with two 30A inline fuses before my starter battery and AUX battery. I think I'm doing everything right, but I'm a little unsure where the wire goes after the 86 connection on the relay? The bus depot directions say it goes to the trigger wire on the alternator? Where is the trigger wire on the alternator? Do they mean Voltage regulator? What's the best way to connect to this wire?

Thanks for the help!
_________________
85 Westy

aeromech · Posted: Wed Aug 03, 2011 2:13 pm Post subject:

Here's some info

Fuse block: http://www.westmarine.com/webapp/wcs/stores/servle...sNum=11287
Switch: http://www.westmarine.com/webapp/wcs/stores/servle...sNum=10597
Let me know if you need more info. West Marine also has several tech articles on the subject.

http://www.westmarine.com/webapp/wcs/stores/servle...nd-Battery
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound

aeromech · Posted: Wed Aug 03, 2011 1:53 pm Post subject:

1. Do I really need to run a heavier gauge wire than the one that came with the Hella relay kit from Bus Depot?

I don't know what they supplied you but bigger is better. You have to have a wire capable of supplying enough amps for all the components run from the aux battery and you have to assume that they would be all on at the same time.

2. Do I need an in line fuse (30A) before the main starter battery?

I'm guessing that you are planning on running a heavy gauge wire from the positive on the aux battery to the starter so you can use the aux battery for start if the start battery fails. 30 amp would be too small. The starter draws more than 30 amps I think so you would want something like a 80 amp. Fuses are for safety.

3. Where does that wire from the 86 on the relay go, alternator or voltage regulator, and what's the best why to connect it?

I've never wired an aux battery like you are doing. $29 doesn't get you much. I use hardware from West Marine and it costs closer to $150 but is a whole lot better. I would assume that the #86 wire is looking for 12 volts so when the generator starts charging it closes the relay and allows the aux battery to charge. What did the directions say?

4. What's the best option for connecting the wire to the positive side of the starter battery?

You could just run a wire to the big lug on the starter solenoid which is also connected to the positive side of the start battery.

5. Say I have a dead starter battery, do you have have to disconnect the AUX battery from the positive side before jumping starting the starter battery?

The way I install this system uses a battery switch which allows for OFF, ON, and COMBINE. So if the start battery goes dead you rotate the switch to COMBINE and then start the engine. In your case I'm guessing you plan to just use jumper cables from the aux battery to the start battery. If that's the case then no, you don't have to disconnect anything.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound


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