I bought a brake resovoir from CBS a while ago (because i needed 3 outlets) buts its only got 2 electrical pins in the top. Now i thought it needed 3?

Looking at my old BMW resovoir that only had 2 pins aswell? SO is one with 2 pins enough for IVA and how will it need wiring up?

Thanks

Mikkel

There is a float switch in the cap that warns you when the fluid level is low. You only need 2 wires for a switch.

I seem to recall that the switch is made if there isn't enough fluid so the light is switched on. I'm not 100% sure though.

Yeah that all sounds right, but howcome most cars have 3 pins? whats the 3rd one for and is it necessary?

Although there are three pins in the sierra switch two are common so just pretend to be two pins. Wire switched 12v to dash warning light. Then two wires from the other side of the dash light, one to res switch, then earth. The other to handbrake switch, then to earth.

Might be the extremely low brake fluid electrocution warning

So bascially my 2 pin ones fine then

Goodo

of course, no reason why not, as long as it works, 2 pin is fine

another of those strange devices that only get checked at sva, only thing they look at the master cylinder for at mot time is leaks


tony