NZ_87_TURBO

Hi,
Im about to install my SAFC on my 87 T2 which is currently running a HKS PFC FCON. The wiring diagram from the apexi site tells me that i wire the yellow and white wire into the pressure sensor signal to the FCON from its own MAP Sensor.
I have also read about people using a MAP sensor for there throttle input (gray wire) when using a SAFC as it is more accurate.
Can i just take same input (MAP ) signal that I would wire the white wire to for the throttle signal?

Another question that is no really related is. How many feeds can i tap into the ECU ignition power source?
Im thinking of running a thick wire with some sort of plug/adaptor on the end that is gona sit in behind the stereo compartment that I can wire electronics into that require a 12v ignition source.

I am also looking at bringing a RPM signal from the ecu to a similar accessible position for use when i use a wide band and wish to data log against rpm