 Heater control lever wire |
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| jesse7flying |
 Apr 28 2025, 06:03 PM
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#1
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Member  Group: Members Posts: 136 Joined: 9-August 16 From: Burleson,TX Member No.: 20,281 Region Association: None 
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As I go through the somewhat butchered wiring harness on my new to me '73 2.0L, I've run across a green with white stripe wire which has been lengthened with some butt connectors running along the center of the car. It looks like the wire is connected to the heater control lever. Can someone explain what this does? The only green/white wire I find referenced in the Prospero Garage drawing goes from the heater fan switch to pin 9 regulator plate in the engine compartment. Thx for the help.
Jesse |
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| Ron914 |
Apr 28 2025, 07:25 PM
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#2
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Member Group: Members Posts: 275 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California
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QUOTE(jesse7flying @ Apr 28 2025, 07:03 PM)  As I go through the somewhat butchered wiring harness on my new to me '73 2.0L, I've run across a green with white stripe wire which has been lengthened with some butt connectors running along the center of the car. It looks like the wire is connected to the heater control lever. Can someone explain what this does? The only green/white wire I find referenced in the Prospero Garage drawing goes from the heater fan switch to pin 9 regulator plate in the engine compartment. Thx for the help. Jesse I believe it goes to the red defrost control lever behind the shifter to turn on the blower fan in the engine compartment drivers side. |
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| Ron914 |
Apr 28 2025, 07:33 PM
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#3
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Member Group: Members Posts: 275 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California
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QUOTE(Ron914 @ Apr 28 2025, 08:25 PM) QUOTE(jesse7flying @ Apr 28 2025, 07:03 PM) As I go through the somewhat butchered wiring harness on my new to me '73 2.0L, I've run across a green with white stripe wire which has been lengthened with some butt connectors running along the center of the car. It looks like the wire is connected to the heater control lever. Can someone explain what this does? The only green/white wire I find referenced in the Prospero Garage drawing goes from the heater fan switch to pin 9 regulator plate in the engine compartment. Thx for the help. Jesse I believe it goes to the red defrost control lever behind the shifter to turn on the blower fan in the engine compartment drivers side.This is from my 1976. Actually as I re-read I think I am wrong . I think this is what its for .   |
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| Ron914 |
Apr 28 2025, 07:47 PM
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#4
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Member Group: Members Posts: 275 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California
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QUOTE(Ron914 @ Apr 28 2025, 08:33 PM) QUOTE(Ron914 @ Apr 28 2025, 08:25 PM) QUOTE(jesse7flying @ Apr 28 2025, 07:03 PM) As I go through the somewhat butchered wiring harness on my new to me '73 2.0L, I've run across a green with white stripe wire which has been lengthened with some butt connectors running along the center of the car. It looks like the wire is connected to the heater control lever. Can someone explain what this does? The only green/white wire I find referenced in the Prospero Garage drawing goes from the heater fan switch to pin 9 regulator plate in the engine compartment. Thx for the help. Jesse I believe it goes to the red defrost control lever behind the shifter to turn on the blower fan in the engine compartment drivers side.This is from my 1976. Actually as I re-read I think I am wrong . I think this is what its for . in my Haynes wiring diagram for a 73 it shows #63 as the fresh air fan in the frunk with a WH/GR wire going to the fan control for the motor coming from #30 the fan switch . |
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| Ron914 |
Apr 28 2025, 08:03 PM
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#5
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Member Group: Members Posts: 275 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California
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looking at the diagram (Haynes doesn't make the most easy to read diagrams ) I see pin #9 on the regulator plate(90) going to (37) the heater fan switch which I still think is the control red lever below the shifter (console) that turn on the blower connected to the heat exchangers .
Someone correct me if I'm am wrong please .I still learning about these 914's |
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| Dave_Darling |
Apr 28 2025, 11:55 PM
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#6
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914 Idiot Group: Members Posts: 15,155 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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No, you've got it right.
This wire gets grounded when that lever is pulled up all the way. This tells the heater blower relay in the engine bay (on the relay board) to send power to the heater blower fan. --DD |
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