MSefi.com read only forum (Jan.15,2018)

Ok I'm looking at the relay board wiring:
is this correct:

INJ 2: ground to injector
INJ 2: ground to injector
INJ 1: ground to injector
INJ 1: ground to injector
FP: to fuel pump +
FIDLE: to fidle solenoid
S1: ????
S2: ???? what are these for
S3: ????
S4: ????
S5: ????
Vref: tps
TPS: tps
TPS ret: tps ground???
Tach: to tachometer or MSD unit???
MAT: is this IAT sensor????
MAT ret: i dont even know where that goes
CLT: coolant temp sensor?
CLT: coolant temp sensor ground???
O2: to O2
Injector +12V: to + of injectors

thanks

Thanks for answering that, Lance - I had the same questions.

Mine, however - the MAP sensor wires, where do they connect?

I figured MAT was Manifold Absolute Temperature or some such IAT
thing, so that's where I put the IAT.

I don't know what to do with my remote-mounted MAP sensor, though - it has 3 wires:

Black
Grey
Grey with white tracer

Thoughts? It is an a-e-a.com unit.


Thanks!


Iain (I don't have a-e-a's instructions, either - I'm pretty sure they were GIVEN to me, with the MS, but I'm pretty sure I put them Someplace Safe. I'm sure they're safe, wherever they are....)

S1 to S5 were originally spares, though they have now been assigned to IAC stepper control (S1 to S4) and ignition control (S5) for MS-II.

So do I need Megasquirt2 in order to use my IAC, or is there a mod for the Megasquirt to give it IAC control? Also, what all would need to be done on the relay board to give it IAC funtionality, Thanks!

Lance,

As I was installing the megasquirt, I realized that I would need IAC control, unless its not necesarry?!

Yes, I do have a stepper style IAC (4-wires). So, I guess it's Megasquirt2 for me, unless anyone else has an idea. Can someone please post the link to the mod for the Megasquirt and relayboard... Thanks everyone!

Ok, I am trying to figure out which wire goes go where on the relay board from my factory wiring harness. so Am I just to copy the db37 cable list above in terms of what each wire is for based upon the labels?

Thanks
Tom

i'm using MS1 v3.0 pcb, so i was wondering about those s1-s5 outputs on the relay board.
what pins do those outputs correspomd to on the db37?
how do the spr1-spr4 on the MS pcb translate to on the relay board? i want to use two ignition coil drivers (vb921), i know that the first one comes out at s5, but if i connect the 2nd one to spr1 on the MS pcb, where will it come out on the relay board?
Regards
Nick