I installed a switch to manually trigger my high and low radiator fans last year, but I would now like to finish the job by dash mounting the switch. I am planning to buy a two button 996 batwing, and I would like to use a defroster switch (996-613-134-00-A02). This switch normally has low, high, and off. Which I would like to use for low, high and off for the radiator fans.
The radiator switch works by grounding either the high or low set of fan relays.
This thread on Rennlist indicates that the defroster switch is a Type B 2 SPST switch (not sure what that means). I am not an expert on reading electrical diagrams, but my understanding from the diagram is that if I wire the high fans and low fans to pin #3 or #5 and the ground to #4, it should function with one press triggering the low fans, another triggering the high fans, and another press shutting everything off. Is this correct?
What about pins #1 and #2? Would those be used for illumination?
Thanks in advance! -Rick
This is the switch wiring from the Bentley manual: