Engine Still Running without Ignition Key! Ford Puma

[Teocali]

Looking for help with tracing an electrical fault.

At present when I remove the key the engine keeps running if:
1 – I have my foot on the brake, and
2 – I have headlight on

The engine will run indefinitely and all other electrics remain live.

Any guidance on how I trace this (assumed earth fault) would be greatly appreciated.

Taken me two weeks just to make it replicate the fault!

Thanks, Sam

[Teocali]

Hmm....


Firstly thanks for the advice - I had ruled out fault brake lights due to them working and as they haven't been changed in the past 4 years.

However after removing brake lights the problem is cured. Brake lights back in - still cured.

Now suspecting it was due to rainwater....

Either way tricky to probe further as its not repeating.

Thanks again.

[Teocali]

Just to follow up to say thank you...

New bulbs have stopped the issue - I do like a simple fix!