neil N typed:
> In theory one could split the load having a dedicated circuit for fan.
> Not sure exactly how. But for sure you would need to know what gauge
> wire and what fuse is needed. IIRC it's basically a few wires from
> fan/resistor inside box to switch etc. You might be able cut in there
> and establish a new circuit with dedicated fuse. I wouldn't reccomend
> it though especially since electrical isn't my forte!
>
> If you haven't already done so, check your grounds. On my  81 there is
> a ground "star" at the driver side up above fuse panel where fan
> grounds to. Poor grounds, and corroded points at fuse connections can
> create resistance in a circuit. Not positive if that would contribute
> to a blown fuse though.

Not likely. A poor ground connection would resist the flow of current,
not increase it, so fuse wouldn't blow.

I'm not seeing any advantage to splitting the circuits unless you simply
want the other devices on the fuse to continue to work after the heater
blows the fuse again. The circuit isn't a marginal one where the fuse is
almost big enough so that it is on the verge of blowing all the time. A
blowing fuse there indicates that something Bad has happened which
could, like, start a fire or something. This is exactly what a fuse does
for a living.

--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR