Talesin
15+ Year Contributor
- 1,718
- 36
- Jan 19, 2005
-
Burbank,
California
Apologies if this is in the wrong forum, but it seemed to fit in..
Just picked up an Apexi TT with a 1G harness from Road Race, got it installed, and noticed 'shunt' wires on the relay box end of the harness. A red and a green spliced from the harness (+12v constant and +12v acc), and a white wire that didn't seem to go anywhere.
Traced it back with the shop manuals, and it APPEARS to eventually connect to pin 110 on the ECU. Which shows it going through a resistor, into a transistor with an input from power, and then to ground.
Does anyone know what pin 110 does? I'm halfway hoping that it's a spot to read the O2 from, so I can hook up the O2 functionality of the TT without screwing around with the wiring loom itself... very little slack to work with, and I'd rather not have to splice an ECU connection together just to get the car going again.
And I know it's probably just coincidence, but might they have tossed on a white wire, as the O2 splice wire is white, to give a hint as to it being an alternate connection point? That or it's just a ground. :b
Found the box for the harness, apparently it's a GReddy TT14-43.
Just picked up an Apexi TT with a 1G harness from Road Race, got it installed, and noticed 'shunt' wires on the relay box end of the harness. A red and a green spliced from the harness (+12v constant and +12v acc), and a white wire that didn't seem to go anywhere.
Traced it back with the shop manuals, and it APPEARS to eventually connect to pin 110 on the ECU. Which shows it going through a resistor, into a transistor with an input from power, and then to ground.
Does anyone know what pin 110 does? I'm halfway hoping that it's a spot to read the O2 from, so I can hook up the O2 functionality of the TT without screwing around with the wiring loom itself... very little slack to work with, and I'd rather not have to splice an ECU connection together just to get the car going again.
And I know it's probably just coincidence, but might they have tossed on a white wire, as the O2 splice wire is white, to give a hint as to it being an alternate connection point? That or it's just a ground. :b
Found the box for the harness, apparently it's a GReddy TT14-43.
