I have an 84 Westfalia that I'd like to set up so that
the alternator charges the auxiliary battery.  I
believe I have the relay that some articles said was
usually included.  I found a 5 connector relay under
the drivers seat.  Three wires are coming from the
front, a blue one connected to 86 on the relay, a red
one connected to 30 on the relay and a red one with a
black stripe connected to post 85 on the relay.  Then
I have two red wires heading into the back, one is
connected to post 87 and the other is connected to the
center post.  The posts are in a cross formation.

Now following 6 steps in the directions on vanagon.com
for setting up a second battery it says ( in step 4 )
to connect terminal #30 to the positive terminal of
the auxiliary battery.

My question is, should I also leave what is already
connected to the #30 terminal on the relay and add the
auxiliary battery to this connection or should I
disconnect this wire from the #30 and replace it with
the connection to only the positive on the aux.
battery?

Is this indeed the relay that is factory installed in
many westy's?  Some of the numbers on this relay are:
411915511B & SR9813.  12Vmax30A.

Thanks in advance.

Fenton & Jessey
84 Vanagon
97 Jetta

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