Volks,
I’m trying to decide what VW shows I’m going to be able to get to this
summer with my Copbug. I was originally thinking of making it over to the
Texas VW Classic in April, but it’s a two-day trip each way so I changed my
mind – actually, my wife changed my mind. So for now I’m looking at
Volks,
I need some help. Various VW models over the years have used dual-battery
systems: campers, sound trucks, fire engines, and police cars to name a
few. The two batteries are connected via an isolation relay (in German it's
a Batterie-Trennrelais). The idea is to permit both batteries to
Bert,
Carefully reading through your description I think it should be wired like this:
New Relay Regulator
86+ B+ terminal
85- 61
New Relay battery
51 #1 (starting)
87 #2
Bert,
Part number for the new Bosch part please?
Also, Let's think through your description of how this really works.
From you explanation of the original relay wiring that has only 4
terminals, I am not sure that it works the way you think it does.
On the original:
51 is the feed
I used to really like Bug Out in Manassas, VA, but I'm a little biased
because it was run by my high school shop teacher. Haven't been in quite
some time. I'm not even certain it's still happening. Google's cache seems
to hint that it's moved to Petersburg, VA, but the actual webpage seems
30 -- Aux Battery +
87 -- Starting battery +
85 (or 86) --- GROUND
86 (or 85) --- Attach to the blue wire that goes to the generator
warning lamp from the voltage regulator.
The blue wire goes from ground to 12+V when the generator spins up and
starts charging. It can be used for
Volks,
Several of you have sent good suggestions how to wire the isolation relay.
In each case, it’s been recommended to have the relay disconnect the two
batteries any time the system is not charging, then re-connect them when it
is charging (using the K pilot-light lead from the VR to close
On Fri, 15 Mar 2013 14:37:01 -0500
Bert Knupp bert.kn...@comcast.net wrote:
As described in the factory’s shop bulletin, the relay is actually
supposed to open the circuit only when the potential between battery
#1 and ground drops below 10.0 volts, but keep them connected in
parallel so
