[Hezath]

I just noticed that the fuse panel has embossed numbers behind each fuse, starting at 1 at the back and going towards the front, but you seem to be counting from the front? Has mine been installed upside-down?

Originally Posted by T77911S

i am not a fan of modifying or hacking the factory wiring, but if keeps the car from burning to the ground, thats a different story.

I would opt for keeping the wiring original also, but what I have here clearly is not factory - things have been stuffed with before i got the car. I'd love to keep it as simple and close to the original diagrams as possible, but I haven't found a black-and-white solution yet.

Originally Posted by ossiblue

Try terminal 15 first and if that is cold in the off and acc positions but becomes hot when the switch is in the "on", go ahead and use it. Your noticeable drop in voltage to the fuel pump is likely related to the wire being connected to an acc. terminal as, in some cars (not sure of Porsche), the acc power is shut down during cranking and restored once the switch is returned from the "start" position. Finding a terminal that is powered only when the ignition is in "run" and "start" should fix that problem as well.

Yes, the terminal next to the one the fuel pump wire is connected (red-black) behaves like we want (On and Start), but the fuel pump draws 6 amps so it would be unwise to power the pump from that terminal.

I think a relay will be necessary, and the signal wire will come from the terminal where the red-black wire is connected.

Thanks for all the assistance so far guys!