I think they are electric. The back of the gauge only has 2 wires, and no vacuum nipple. I think it's specific only to S15's too. You can use the holder in S14's though, but you have to cut the top bit of the plastic to fit.
hey Im about to grad from university here in japan on 2012 so Im thinking of bringing back my FD together with me.but I dunno If it can be brought back or not since it is not even listed in the 2011 CIF from...
hallo, i experience problems wif my volt meter..im driving an Auto transmission car..When i start the car, gear in P position, the meer will show voltage ard 11..but when i put gear in D or R position, the meter will...