The problem with the heater fan switch blowing the fuseis just not the
heater fan. As a follow up point of information, if the fuse that is linked
in the heater blower motor blows (like when the heater blower motor swiitch
shorted), is not only the temp and fuel instruments going off line (as the
heater is wired to the B(Battery Post) of the voltage stabilizer, but the
flashers (turn signals) and wiper motor will not be on-line either- this is
usually much more important than the heater fan!
When I figured out the short problem, in the early '70's, I tapped the
'hot' side of the fuse box, wired a new lead with an
in-line fuse direct to the heater motor, that way if the switch shorted
(even after elec. tape wrap) and the fuse blew, you still had the important
stuff - turn signals, instruments and wiper motor! (remember the heater
motor was an 'optional equipment' item.
Check out the wiring diagram!
Also on this circuit were the 'reversing' lights and overdrive switches-if
fitted!
Sherman D. Taffel
Columbia, MD
'65 TR-4 CT40054L
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