Re: Steering play and a hot under dash light bulb unit
Posted by HH56 On 2009/11/12 22:45:33
I suspect what you have is similar to these "universal" types currently on ebay but is illuminated when the heater is on. Those caps are usually a very light color the light can shine through. Normally the cap fits over the bulb and presses into a press fit arrangement where groves or protruding pieces of the plastic will lock in. You might try taking the bulb out, identifying the socket part and then see what looks like it might accept the cap base with some kind of groove and carefully see if it will turn. Looking at the switch in pict 3, it looks to be just on-off but in picture 4, the size of the round threaded mounting looks like it might be an illuminated type.
The type of switch depends on the heater. Some are just a fixed two or three speed, others have a rheostat in the switch body so continuously variable, and the deluxe heater/defroster combo used on some years had a 3 speed switch that when you turned it in one way, motor rotated one direction for heat and turning switch other direction caused the motor to reverse and blow air out defroster ducts.
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The type of switch depends on the heater. Some are just a fixed two or three speed, others have a rheostat in the switch body so continuously variable, and the deluxe heater/defroster combo used on some years had a 3 speed switch that when you turned it in one way, motor rotated one direction for heat and turning switch other direction caused the motor to reverse and blow air out defroster ducts.
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