^ Thanks Hcoles. Was this our Back Up Light Switch 914 613 541 02? Just submitted a report to Engineering to have them check the switch open/close stand-off dimension, exactly as you did. Great work, BTW!

Did you also use Activating Pin 901 303 017 02 (29.3mm, for manual transmissions), and Back Up Light Switch Boot 914 613 491 00?

I used the pin that was there. I'm pretty sure it is the pin that came with the car.

The switch I ordered from PP was 914-613-541-03-M253.

Hi URO - the holes for the bullet pins on the wiring harness on your backup light switch are way too large, the bullet pins will not stay seated. I tried them in my old Porsche OEM switch that came out of the transmission and they were a nice tight friction fit.

Now I'm stuck with the transmission in the car and filled with fluid and a reverse light switch that is out of spec... and the wires wont stay connected.


Bill

Hi Bill, would you happen to have the Sportomatic transmission, or manual?

We sell about a thousand of these annually and haven't had anyone mention any connector issues - we'll check it out immediately.

Thanks! My transmission is manual. That is the part number that I ordered (for a 1976 Mag case 915 transmission).

Bill

Woohoo! Love this forum. Question-
 

Adding to this thread’s reverse light problems, and solutions!

1979 911SC (with a 78 engine). Got it less than a year ago and have been working several problems. Here, had no reverse lights. Shorted the switch and boom, light!

I was prepared for the worn pin issue described earlier in this thread. Bought 2- 5/32 drill bits and a reverse switch. Got the car up on jacks and removed the switch. NO PIN!

Since I had the drill bits, I used the measurements provided earlier and after a hour in the shed, made my own pin instead of waiting for a week plus costs.

Tested the old switch, it was good. Put it back in with my new pin. Reattached the wires, and voilà! LIGHTS!

Now the question-

The rubber stopper idea mentioned earlier didn’t work for me. Lost about 1/4 qt of tranny fluid. I removed the filler on the side of the case and it was dribbling out.

I have read that a full transmission should be at or below the filler. How can this be if I lost as much fluid as I did? Did they turn it on its side during the last rebuild and over fill? FWIW, although I have driven it yet it seems to shift easier during my light sw checks.


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