At 11:28 AM 7/26/2003, Randy Charrette wrote:
>I am in the process of wireing in a westy fridge to my Syncro GL. Question
>on the 12V hook up. I'm looking at the manual and it appears the Black is
>Posative, Blue is Negative (-), and I don't know what the brown wire does???
>Any help is appreciated.

Black is the +12v heater feed -- it should be wired so that 1) it can carry
8 amps with absolute minumum voltage drop from the battery and b) so it
cannot accidentally discharge the starting battery.  VW did this by feeding
through a relay that's activated by the alternator D+ lead; so the line is
live only when the alternator is actually charging.

Blue is the 12v ground.  Again, it needs to carry 8 amps with as small a
voltage drop as practical.

Brown is the +12v feed for the thermostatically controlled fan on the
outside back of the fridge.  It draws less than a tenth of an amp, *but it
needs to be hot any time the fridge is in use by any method.*  It grounds
through the blue lead.  As far as I know it's the only brown wire in the
vehicle that's not a ground.

david

--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage"
'85 GL "Poor Relation"