Has any one installed one? Im sort of confused as to where and how to go about this guage. Any tips.

electric, or mechanical?

sorry..

mechanical..

Didn't it come with one?

I'm not sure how you would do mechanical on a Foci, considering the one it has stock is electrical.

I've done a mechanical water temp gauge on my 89 Mustang, but a Foci is a whole different car. Sorry, I can't help......

maybe someone else will chime in...