Blitz speed jumper - how to wire it up?

[cultus]

Was given this and told it was from a 1ggte engine, there are 4 wires : red, black, yellow and green.

Need help in wiring it up : which one is joined to the loom and which one goes into the ecu? I assume we are cutting and joining SP1 right? I have a 1ggte with gray ecu socket.



Thank you in advance for your help...TQ

[Hydra]

One would think there is power, ground, input, output... just need to work out which is which

It's generally a safe bet that the red is positive, 12v. The black will be ground.

The yellow and green will be input or output. You could just try hook them up either way and see if it works or not - might break it, might not.