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http://www.vems.hu/files/KevinBlack/Todd%20P%20Wiring2.xls

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Custom EC36/EC18 Wiring harness

* 12v IGN: 14 AWG to pin 25

* GND: 14 AWG to Pins 5,21,22,32,26 (ridiculous overkill) , sensor GND wires on branch (per UserGuide) to pin 26, all GND wires then go to 10 AWG wire to Engine Block, at OEM location for 1993-1998 VW 2.0 engine.

* Injectors: Pins 7,19,8,20

* Ignition: Originally used Pin 35 Ch0 to dummy ignitor, eventually used Pins 34 and 36 (Coil 2 and Coil 3)

* IAC wire ran to Pin 17, never used or plugged in to anything(tied up, no chance it was shorted to ground)

* Analog 5 Pin EC18-16, Launch Control input using 2700 ohm pullup to pin EC36-29

* Analog 7 Pin EC18-12, tested for WOT shift but eventually used for input from Autronic Air/Fuel Analyzer.

* Autronic Air/Fuel Analyzer analog ground is connected to chassis ground (afterthought)

* Eventually switched pins between 16(now Wideband) and 12(now LC), to allow the wideband to be logged in Megatune "Misc Voltage 1"

* Ch4 Output Pin 3 - Tach, 1000 ohm pull-up to 12v.

* Changed to Ch 0 Pin 4 (to test output, after that found bad instrument cluster and changed)

* Ch5 Output Pin 15 - wire triggers OEM fuel pump relay and additional relay powering 1) Injectors 2) Wideband Pin 3 and Flyback to VEMS and FJO Driver.

* Ch6 Output Pin 31 Fan Relay

* Ch7 Output Pin 30 Shift Light

* Stepper outputs - wired as spares in harness, never connected to anything.

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custom FJO fuel injector driver

* Connection = (4) in, (4) out, (1) GND (12 AWG) and (1) INJ Power (I assume for Flyback)

* Flyback wire to VEMS is still present

** do you know that injector outputs can only pull to ground ? (that is pullup might be needed, perhaps internal in the FJO injector driver, did you think about this ? Measure voltage when inj output inactive)

*** Yes, and No. All I know is that the FJO Injector Driver is a commercial unit being used by thousands of users, many by (modified) OEM Honda ECU applications (If this helps answer your question?) and are installed the same way as this one.

* dig up some FJO docs

* Measure the inj output

** Ignition ON (FJO supply present)

** ECU injector output disconnected from FJO input

** measure DC voltage on FJO input (if it's +5V or +12V).

** optional: pull FJO input to ground with a 1k resistor,

*** again: measure DC voltage on FJO input (if it's +5V or +12V).

**** TODO on Wednesday