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.
I have a problem to start the engine, it can be start but really hard. sometime after 7-8 crank .. then it can start.. I do have problem until my new battery weak and I need to do jumper start .. coz the battery kiok...
guys, i need ur help
my car is wira aeroback
few weeks ago i found out my car suddenly stinks...
feel so weird bcos my car using glade air freshner, it used to b dam nice smell once i open the car's door.
few days...