 Heater Fan Switch, Where is the heater fan switch? |
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| UKed |
 Nov 27 2016, 09:36 AM
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#1
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Newbie  Group: Members Posts: 5 Joined: 5-December 14 From: United Kingdom Member No.: 18,189 Region Association: None  |
Hi
An easy question for you. I'm trying to get the heater fan to work on my 1973 914 2.0lt. The fan motor runs when I wire it direct to the battery. I have a wiring diagram that shows a switch but where is the switch on the car? (IMG:style_emoticons/default/confused24.gif) Thanks - UKed |
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| BeatNavy |
Nov 27 2016, 04:04 PM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,951 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region 
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Just more info: the green wire in the tunnel under the shifter may be hiding in there. Fish it out with a dental pick or something. It should connect to the tab on the heater lever in bandjoey's picture. When the lever is pulled up far enough ("max" heat) that green wire will ground the relay that's farthest back on the relay board (IIRC) via pin 11 on the 14 pin connector. That relay then provides power to the fan. So, if it's not working check: the green wire is connected, the lever is far enough up, the 14 pin-connector is connected, the relay is getting power, and the relay itself is serviceable.
At least that's my understanding of how it works. |
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Posts in this topic
UKed Heater Fan Switch Nov 27 2016, 09:36 AM
bandjoey Small red pull up lever just south of the shifter.... Nov 27 2016, 09:41 AM steuspeed There should be a green wire attached to the lever... Nov 27 2016, 02:19 PM UKed Brilliant thanks Steuspeed. i will remove the cent... Nov 27 2016, 03:19 PM UKed and thanks to Bandjoey Nov 27 2016, 03:20 PM
porschetub
Just more info: the green wire in the tunnel und... Nov 29 2016, 01:25 AM BeatNavy
Just more info: the green wire in the tunnel un... Nov 29 2016, 04:12 AM Tbrown4x4 I just went through this. The URO fan relay had a ... Nov 28 2016, 05:58 AM Dave_Darling
I just went through this. The URO fan relay had a... Nov 29 2016, 11:39 PM |
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