According to Bentley, it looks like the 2nd wire off of the compressor goes
to the idle control valve so another could be spliced in here as I see it. I
can  understand that the Sanden 510 may not be as smooth as the Sanden 709 and
the  greatest consideration will probably be the cost of swapping over the
fittings  and or hoses to use the 510 in it's place. If this becomes cost
prohibitive then  I will sell the new Sanden 510 on the Samba or Ebay as it is
new/unused and  would be a perfect replacement for an earlier model 508 or 510 that
has failed  and purchase a used or new Sanden 709 unless someone on the list
feels that  another brand like Arctic would be just as good.

David Clarkson
90 Westy (237k)

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