Anybody had much luck getting a power cable into the car spent most of the day looking for a way gave up. Running from the fuse box I think would be unsafe as will be running at least 800rms.
I wouldn't. Something in new MOT regs iirc which will cause this to result in the car being unMOTable iirc - although I could be wrong. I suppose it also depends if it's visible / detectable though.