Stiver3

Hi

About to replace my mechanical boost gauge with an electronic version (adding oil temp and pressure at same time)

Question is.... where do i wire the 3 sensor wires into on a Classic STi?

picture below is the item in question (although mine does not have the plug on the end... just 3 wires

picture link http://www.top-gauge.com/pics/NEO/NE...3/IMG_3119.JPG

Red
Black
White.... where do i wire these into??

Thanks in advance!

silent running

That looks like the same boost sender as on mine ('Prosport') but it came with everything needed - the t-piece for the boost signal, extra vacuum hose, the sender, the specific plug to fit the sender with wiring to go directly to the back of the gauge. If you don't have nay of this stuff, you're pretty stuck, although you could bodge it fairly easily.

At a guess the three wires are +12v, 0v, signal voltage. And even more of a guess would be black is 0v, red is 12v and the white is the signal, but very hard to say without the instructions.

ScuuBdoo

red....+12V
white...illumination
black...ground

you can join the red and white together and the gauge will be lit all the time or you can wire the white wire to your side lights.

Stiver3

Okay... thanks for that i will have a play around later....