On my TR4 I took power from the horn circuit. My thinking was that it is
already fused and has stout wiring. I can honk the horn while the fan is
running so hopefully I am not overloading the circuit (okay, I'm sure I'm
not because I did check the amps the fan draws).
I used a simple 'piggyback' female/male spade connector on the p/s horn to
send power to the fan. I then ran the ground side back to a toggle switch
(my fan is manually controlled) since I retained the stock fan and only use
the electric in traffic, up mountains, etc. That made it a simple one-wire
run back to the cockpit.. scarcely noticeable.
I personally prefer the manual set-up as I only use the fan on infrequent
occasions and can usually anticipate those situations and start it running
much sooner than a thermo switch would respond.
Your set-up will differ but perhaps this info will help.
Geo
On Sat, Jul 25, 2009 at 4:22 PM, Greg Schuett <tr4boy@surewest.net> wrote:
> I'm looking for some help in wiring...
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