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| | | | Joined: Apr 2009 Posts: 232 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 232 | I have the after market heater assembly from chevy classic in my 54 1/2 ton 12v.It has the under dash heat control knob/switch.Can anybody tell me what wires go to what terminals on the switch? there is one wire coming from the blower also.PO did not have it hooked up Thanks. | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | If you have the rheostat type switch you run a hot wire from the switched side of the ignition switch to the heater switch and a wire from the output side of the heater switch to the hot wire coming from the heater blower. If the terminal use on the rheostat makes a difference they should be marked in some way. If there's no markings it probably makes no difference which you use. If you have a multimeter you can determine which is which fairly easily by checking the resistance through the switch as you turn it through it's normal travel then reversing your leads and doing it again.
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| | | | | Joined: Apr 2009 Posts: 232 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 232 | It is a 3 position switch. 2 terminals. One is marked "B" I assume battery or key side. Or maybe "B" is for blower? What inline fuse would you recommend 20 amp? would you put the fuse between the key and the switch or the switch and the blower? | | | | | Joined: Apr 2009 Posts: 232 Shop Shark | | Shop Shark Joined: Apr 2009 Posts: 232 | nevermind ,got it in and all works fine. thanks | | |
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