Adding oil pressure gauge?, to the six... Options

[Mike D.]

Can the single wire used for the oil idiot light also be used to operate a pressure gauge? I mean instead of the light? Or is the two pole pressure sender a must have?

I have a 911 temp/pressure gauge I'd like to instal.

Anybody out there with a BTDT?

TIA,
Mike D.

[Cap'n Krusty]

The sender used MUST match the instrument, so you need to know the year of the instrument to get the right sender. Earlier 911s had the instrument sender next to the thermostat, later cars had it mounted next to the alternator in the right cam oil line. There are different senders for this location. The earlier case mounted one has 10 x 1 mm tapered threads, the later ones have a couple of different sizes, depending on the year. Furthermore, the light senders are different, too. Early engines take a black one, later cars take a red one. As I recall, the threads are different, too. Good luck! The Cap'n