| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | The system might allow for a two speed fan, does your switch have 2 positions plus off? Easy to check continuinity with an ohm meter or battery and light bulb. Might be that one Wire goes to one contact on switch, other gets hot by switch movement?
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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