I have tried both positive and the earth hard wiring them both separately, the positive side didn't make any difference. But the earth side seem to work that is when I found the bad wire, so that's why I thought it was the suspect looking wire and why when the car run thought I sorted it.
The earth on the throttle cable bracket looks good, and when the car was running yesterday it seemed to be running really good.
Think I'm going to take the car off the road this year and just pull the loom and replace the ecu with a aftermarket one when I can afford it