Sensors in breather cover?

[dhopkins]

There are two sensors mounted into the breather cover of my 1969 911S. Can anybody tell me what they do? Are they for the idiot lights?

Don
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1969 911S
1976 914
1981 911SC

[304065]

Thermo-time switches to control cold-start enrichment. 2,0s have a pair of them, 2,2 and later only have one.

[304065]

Look on the first couple pages of check measure adjust for more info.

[dhopkins]

Thanks. Then where is the sensor for the green idiot light? I just put my engine back in and when I go to start it the green light does not go on so I must have neglected to reconnect the wire for it. Wayne's book says to let the starter turnover the engine with the ignition disabled after a rebuild to be sure you have oil pressure before actually starting up the first time. The green light is not coming on when I turn the ignition key.

[304065]

There is no green idiot light on a '69S. On the oil pressure gauge there are two lights. The bottom is the alternator warning light, and the upper is the brake warning light. It's not until much later that a third light appears in the gauge wired to a low oil pressure switch.

Your pressure indication should be the gauge.