As above need a water temp gauge for my efi frst engine... I want an Autometer Pro Comp one to match the rest of mine but not sure what will be easier to plumb in, either electrical or mechanical. Where would I have to plumb either? Not too fussed if its not accurate to the nearest .1 of a degree, i just want an indication if its going to overheat on me or not!!!

So which one should i go for??

Cheers
Chris