Cutting power to ECU

Hi guys

Going to keep this fairly vague for obvious reasons. But I'd like to fit a security switch in line with the power supply for the ECU on my td5 90.

Can this be done without causing any problems? For instance will the following still work?:
Hazards for aftermarket alarm
Horn
Interior lighting

Fairly sure the original alarm immobiliser is disabled.

Any thoughts welcomed guys.

Thanks and happy new year

ONE LIFE LIVE IT. D90 said:

Hi guys

Going to keep this fairly vague for obvious reasons. But I'd like to fit a security switch in line with the power supply for the ECU on my td5 90.

Can this be done without causing any problems? For instance will the following still work?:
Hazards for aftermarket alarm
Horn
Interior lighting

Fairly sure the original alarm immobiliser is disabled.

Any thoughts welcomed guys.

Thanks and happy new year

Click to expand...

I am assuming there is at least one fuse in the fuseboard with a picture of the engine on it, thinking dead easy starting point?