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Seeking assistance on new hack

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As cooler weather is coming I remember the frustration in cool weather top down driving. I drive it all of the time on nice days down to about 40 degrees with the top down.

Unlike my 2000S where I could get the heating to work driving or at a stop, I find that I can't do that with my 2007 987S (with auto climate). If I set the heat so that it's comfortable driving, I bake at a stop. If I set it for comfort at a stop, I freeze when driving. I asked a Porsche exec about this because it would be so easy for them to do. He agreed however........

I'd like to do something like speed dependent volume control with the blower. Knowing the speed and having access to the blower switch, its contacts or the wires, I can build the micro controller and parallel switch to step the blower up and down with the speed. I need some assistance with the following.

1. On the 2000 986 there is a pin on the relay for the top (pin 18 I think) that is a signal pin that is related to speed. It was used for a volume control hack some years back. Does a similar thing exist on the 987?

2. Does anyone have and would share the small part of the electrical schematic that involves the blower switch?

3. Can the blower switch easily be removed for examination, or can the trim be easily removed for examination ?

Thanks in advance.


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