Somewhere in my patch harness from trackspeed the aem ecu connects to the dash. So there must be a wire that goes to the ecu to the dash. On the 1.8 at least.

 

1.8 is different.

 

Maybe, but stock my car still took the tach signal from the ignitor in each coil. You really just need to find the wring diagram from a 96 euro FSM.

 

I have that here and already tried a sketch in page 1 on what I have to do...



My problem is that there is only a wire going from the igniter to the dash - as I will throw out the igniter there will be nothing firing the tach in dash. TO the igniter there are only two wires going from the ECU/MS - which I will both need as trigger for my coils. I thought one of the other 1,6 swapper could tell me their solution...

 

It looks like that Yellow/Blue needs to go from your MS to your tach.

 

what coils are you using?

 

Plan is to use the OEM VVT coils

 

okay and you're saying you wont be able to send the tachout through the B/W wire to the ignitor and splice that the the Y/B?

 

By B/W wire you mean the Nr. 5 B/W from your picture at the Toyota COPs thread?



That wire is not existent on that Euro past '93 MX-5 1.6...
See here:



So I think I will make a new wire to either the igniter or directly to the tach.

 

Wait wait wait. If thats the case the tach should be getting signal directly from the ecu already.

 

Crazy ****... it's getting the tach signal from the igniter module...

Here is the cutout from the Factory wiring diagram for the car:

Instruments:


Igniter:


You can clearly see, that the tach signal comes from the igniter...

 

Is it the B/W wire at place 3 in the first picture? Can you unplug your gauge cluster and find the b/w wire there and then check continuity to the b/w wire on the ignitor?

 

No B/W wire at the igniter connector:



The Y/L is going from the igniter to the dash/diagnostic connector.

 

Is that not a b/w wire that I circled in red?

 

looks like it. his diagram says it should be blue, but that doesn't look like a blue wire and i almost make out a white stripe right where it's going into the connector.


what is the blue wire going to the kraffstoff pumpen relay supposed to be?

 

**** it.. this ought to be a "L" aka blue wire but it is indeed a B/W wire

I cleaned it a bit:


Now I have to see if there is a wire at 2I at the ECU because that would be the spot for the B/W wire at the 90-93 1,6 ECUs.

 

so you should be able to run tachout through that white/black wire, then tie it into the yellow/blue somewhere ove rhte rainbow to send to dash.

 

IIRC that black/white wire is the 12V.

 

yeah, but it's a pull up from the ECU for the tach signal.

 

Also just see if you can check continuity between that pin on the plug and the b/w pin at either the ECU or gauge cluster to see if it is the correct one.