For the defroster the added load is no problem for the rear defroster
circuit. For the switch a power mirror switch from most any vehicle will
work and dash mounting will mean less wires going into the driver's door.
You will need to pull the connectors out of the plugs to get the wires on
the mirrors themselves into the doors. Don't just cut them. I would try real
hard to get the harness and mirrors from a junkyard. The factory harness for
them make for a simple installation. You should try to get the later wire
sleeves for the doors hinge area. The power mirrors are a great upgrade
although it is a bit ironic that once installed and adjusted they seem to
never need re-adjustment even with 4 different drivers.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Cunegonde
Sent: Saturday, May 03, 2014 2:53 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Power mirrors switch substitutes

Thanks volks - found my Volvo engine swap guy at his shop in Portland OR and
will visit his van shortly.

Now... Cunegonde is an 83.5 and of course had the usual flag mirrors. We're
ready to install power mirrors but don't have the OEM switch/wiring harness
for them. Dash is out and I've copied the wiring from the 1991 diagram.
Including hooking up the mirror heater power supply via the rear defrost
circuit (do I need a relay for the additional load?).
But what do you all recommend as a switch, and where are some places to
locate it? All instrument cluster switch locations are taken.