Dash clocks resetting?

[Niall]

Hmm well the battery is in the boot but has the earth cable running all the way to the engine bay. Do you reckon that would have any think to do with it?

I was thinking of sorting a shorter earth anyway. Could just add a short 1 as an extra earth i guess

Yes. Thats just introducing voltage drop right there. Get rid of that earth and earth it in the boot to a solid clean earth and i bet you'll get a bit of improvement straight away