Thanks for the advice. So basically the Sensor 1 output (green) and the sensor 1 Input (orange) from the SRT ECU gets connected together thenand both run to the stock ECU color code (Red/Blue). Is it essential to solder the wires?

 

The red/blue wire is the only one that is actually cut, the rest you just tap into. So, the green will connect to one end of the red/blue and the orange the other. I would need to see the instructions though as I don't remember which side which connects to. This is important.

Yes, I HIGHLY sugget soldering.

Jonny

 

If he has 98 GS300 this should be the wiring.

 

good thing this thread is still here.