Electrical Wiring

I fitted the ECU, i opted to put it behind the scuttle as this is just the right distance to allow me to leave the shielded cables untouched as they are just the right length. I've trimmed the remaining wires down to size. I connected up the battery to it temporarily, the engine spins over but I get no fault code on the display, so I think i've really broken the wiring. At best it might be i've missed a wire to the ECU that the display needs, but knowing my luck, its more likely to be something more complex.

On further investigation there is now power to the power commander so I suspect I've made a dogs breakfast out of the various live circuits somewhere.