Steve wants to you to bypass the low speed resistor to be able to see if it is faulty. If the rest of the circuit is ok you will get a high speed fan when the thermal switch trips at the lower temperature setting, and of course, you will still get the high speed fan at the high temperature setting (of the thermal switch).
If the low speed fan thermal switch instead is faulty, you will get nothing for the low speed setting, and the high speed fan setting will work, or nothing will work as well at the high temp setting if that part of the switch is faulty as well.
Nothing to remove, just jumper wire the two wires together when they are removed from the resistor. Easy to reach.
89 Milano (wife's daily driver since 1989, Shankle Sport)
91 164S (my daily driver since 1994)
94 164LS (~Q) (trip Alfa since 2000)
72 Morgan 27 (water time since 1976)
previously owned since 1964:
62 Morris MiniMinor 850, 67 Austin 1275 Cooper S (Downton 3/4 race), 64 Giulia Sprint GT (1st red one made), 72 Fiat 128 Sedan, 75 Alfetta Sedan, 78 Alfetta Sedan, 78 GTV, 81 GTV6, 86 GTV6
Last edited by Del; 06-04-2011 at 05:13 PM.