 Defrost Switch, No work |
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| stickyfingers |
 Feb 24 2021, 04:24 PM
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#1
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Member  Group: Members Posts: 168 Joined: 19-February 21 From: Toronto Member No.: 25,223 Region Association: Canada  |
Good day folks.
1 week into ownership of this beauty I'm trying to fix some issues (mostly electrical). The defrost light is non-functional and I don't know how the switch actually works. I've opened the switch (as attached), the bulb is in good shape but the light doesn't come on. I see 1 wire coming into it - split into a blue and black one attached to the bulb I assume. The switch seems like a dummy tbh but it isn't. How do you even turn it on? Mine just wiggles freely. Hoping someone can shed some light - waiting for my Haynes manual to arrive - so hoping I can get a head start trying to fix this. Its cold out in Toronto. Thank you!  |
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| rfinegan |
Feb 24 2021, 04:33 PM
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#2
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Senior Member Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region 
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IF I recall, the light comes on with the dash lights
-Robert |
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| bbrock |
Feb 24 2021, 06:03 PM
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#3
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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QUOTE(rfinegan @ Feb 24 2021, 03:33 PM)  IF I recall, the light comes on with the dash lights -Robert (IMG:style_emoticons/default/agree.gif) There is no switch, it is just wired in with the instrument lights. The wire brings power and it is grounded through the screw on the other side. If it isn't working, try cleaning up all the metal contact surfaces between the screw hole and chassis. |
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| bbrock |
Feb 24 2021, 06:04 PM
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#4
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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Double post
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| ClayPerrine |
Feb 25 2021, 08:44 AM
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#5
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Life's been good to me so far..... Group: Admin Posts: 15,392 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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QUOTE(bbrock @ Feb 24 2021, 06:04 PM) QUOTE(rfinegan @ Feb 24 2021, 03:33 PM) IF I recall, the light comes on with the dash lights -Robert (IMG:style_emoticons/default/agree.gif) There is no switch, it is just wired in with the instrument lights. The wire brings power and it is grounded through the screw on the other side. If it isn't working, try cleaning up all the metal contact surfaces between the screw hole and chassis. (IMG:style_emoticons/default/agree.gif) The blower in the engine compartment should come on when you pull the heater handle all the way up. That is just a lighted indicator for the heater handle function. Clay |
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| jhynesrockmtn |
Feb 25 2021, 10:12 AM
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#6
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Member Group: Members Posts: 417 Joined: 13-June 16 From: spokane wa Member No.: 20,100 Region Association: Pacific Northwest
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I have an early car so no defrost light but I just went through getting the engine compartment fan to work. My lever was disconnected from the wire in the tunnel. A PO had extended that wire at some point. I re did the connections and it now works great.
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| stickyfingers |
Feb 25 2021, 10:28 AM
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#7
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Member Group: Members Posts: 168 Joined: 19-February 21 From: Toronto Member No.: 25,223 Region Association: Canada |
Thanks all. This is really helpful. Does the blower only function when the car is on and started? Or can it work with just the key turned without the car on because it doesn't work that way? Just trying to figure out the options here. The weather has improved here so I am going to take it for a spin locally to test this out.
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| bbrock |
Feb 25 2021, 10:41 AM
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#8
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914 Guru Group: Members Posts: 5,269 Joined: 17-February 17 From: Montana Member No.: 20,845 Region Association: Rocky Mountains
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QUOTE(stickyfingers @ Feb 25 2021, 09:28 AM) Thanks all. This is really helpful. Does the blower only function when the car is on and started? Or can it work with just the key turned without the car on because it doesn't work that way? Just trying to figure out the options here. The weather has improved here so I am going to take it for a spin locally to test this out. Should come on with the lever pulled up and the key on. The switch in the lever also grounds to the chassis. There is a green (IIRC) wire that attaches to the bottom of the lever mechanism that feeds power to a contact and the lever completes the ground to chassis when it is pulled up. There is also a relay for the blower on the relay panel in the engine bay so check to make sure that is present and functioning. |
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