DIY 94-97 to 98-99 Patch Harness Parts

[lawdogg]

Ok so just found this out ... the 12-pin 040/070 hybrid plug ordered off of new united race tech does NOT fit into the 12-pin port of the hybrid ECU. It's too wide. Curses.

[yellowstealth]

Just FYI for anyone that was looking to do this, it looks like Digi-Key just got some more of P/N 670-2315-ND (JAE P/N MX7-A-30SC) in.

[Tiberius]

you can get the right 12-pin housing at DIYAutoTune.com Megasquirt Kits / Assembled Engine Management Systems, Wideband o2 Sensor Systems and tuning products

[lawdogg]

What's the part #? I can't find it on that site.

[Tiberius]

Conn-PNP-M12

[yellowstealth]

I've been working on mapping the connections for a 1g --> 99 TT adapter harness. I've got most of them, but there's a few left I need to work out. I'll post it from home later. Does anybody already have this info they're willing to share?

[yellowstealth]

Here's the excel spreadsheet of what I've got so far:
3s_Gen1-99_ecu_pins.zip

Important things I don't know yet:
99 pin ID for the knock sensor
OBD-II port connections / Flash connector

If anybody has any info on those I'd greatly appreciate the help.

[lawdogg]

Word, got my 92 running on my 94's ECU. No extra connectors, wiring, harnesses needed. Just took the pin out of the harness and connected it to the ECU. w00t, lol

[Tiberius]

I'm only familiar with gen1 and gen2 but I'm pretty sure only gen1's have knock sensors. All other models don't.

[yellowstealth]

99 SL ECU showed up today, so I just stuck it in, pulled the stock ROM and saved it, and flashed the VR4 ROM to it. Since that worked, I'm assuming my OBD2/Flash port connections are correct, so here they are:

OBD2 Pins 4 & 5 to chassis ground
OBD2 Pin 16 to 12v switched power
OBD2 Pin 7 to Pin 85 on ECU
Flash port Pin 26 to Pin 100 on ECU

I'll post a final spreadsheet when I'm sure of the rest of my connections.