Hey guys I'm in the process of fitting a ps1000 to a 1985 rx7 with a 91 s5 13bt motor

I'm using an external 5 bar map sensor, the map sensor came with a small wiring diagram that says pin A is ground, however on the ps1000 main wiring diagram the ground wire for the map sensor and the tps says "to ecu pin b14 black/white wire"
my questions are, what is b14, b11 etc? There is no black/white wire in my loom there is a thick black, a thin black and a black yellow, can I just earth the tps and map on a chassis earth?

 

also, i am using a short loom, no relays and stuff included as i was hoping to patch this directly into the microtech loom alot of time was spent making

is 'b11, b14' a relay(s)?

 

lev call me on your lunch break today and ill sort it out for you mat.e