 Auxiliary Heater Fan Works, but not by the floor lever? |
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| dgraves |
  Mar 18 2019, 03:20 PM
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#1
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1974 914 2.0  Group: Members Posts: 180 Joined: 6-June 16 From: Montana Member No.: 20,076 Region Association: Rocky Mountains  |
The heater in my engine compartment does in fact work when I hook up directly to the battery. Unfortunately it does not work when I pull the red lever on the floor in my cab. How can I check if I have a correct circuit?
Thanks in advance. |
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| BeatNavy |
Mar 18 2019, 03:26 PM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region 
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Most likely the ground connection at the lever became disconnected. If you unbolt that lever and gently start to pull it out of the tunnel you should see a little tab with a green wire connected to it. On my '72 the wire was disconnected and hiding in the tunnel. I had to fish it out of the tunnel with a dental pick and reconnect it to the lever. It grounds that circuit when the lever is fully lifted.
Check that first. If that's connected and grounding properly when the handle is lifted, then you have to look to issues with the relays/relay board. |
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| dr914@autoatlanta.com |
Mar 18 2019, 04:07 PM
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#3
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914 Guru Group: Members Posts: 7,864 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
I agree, either the lever is not grounding, the relay is bad or the rear fuse on the relay board is bad or not making connection
QUOTE(BeatNavy @ Mar 18 2019, 02:26 PM)  Most likely the ground connection at the lever became disconnected. If you unbolt that lever and gently start to pull it out of the tunnel you should see a little tab with a green wire connected to it. On my '72 the wire was disconnected and hiding in the tunnel. I had to fish it out of the tunnel with a dental pick and reconnect it to the lever. It grounds that circuit when the lever is fully lifted. Check that first. If that's connected and grounding properly when the handle is lifted, then you have to look to issues with the relays/relay board. |
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Posts in this topic
dgraves Auxiliary Heater Fan Works Mar 18 2019, 03:20 PM
914_teener
I agree, either the lever is not grounding, the r... Mar 18 2019, 06:26 PM dgraves
Most likely the ground connection at the lever be... Mar 18 2019, 07:50 PM SirAndy I'm assuming the green wire is the power? Is ... Mar 18 2019, 08:02 PM 914_teener This circuit works as a switched ground. The lever... Mar 18 2019, 06:13 PM |
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