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View Full Version : Transmission Auto Auto-Transmission no first gear - can I wire an extra switch for that?


eseethal
06-01-2026, 01:52 PM
Dear experts,
same as 10 years ago my DeLorean does not switch into the first gear when putting it in D. I suspect the govenor, as it was the case the last time, I had it repaired and it fixed the problem. Second/third and reverse work flawlessly. But I have to attend a classic historic race on Thursday with several hillclimbs (I know, it is no racecar, but the people love it anyway) I am looking for a way to manually install a push button switch into the cabin to power the solenoid #1 when taking off. That would put the gearbox in 1st, right? I measured the diagnostic port and it does show 10V voltage for the solenoid #1 and #2, engine not running, gear selector in D. When I the "5 o-clock" pin (grey), would it actuate the #1 solenoid (if that is in working condition)?
What would be the best way to get into the solenoid wiring? Is there something to consider?
Thanks for any help here! I don't want to stress the gearbox without first gear :-)

thanks................Eugen
eseethal
06-02-2026, 04:36 AM
Update: it was a 30min job. Just disconnected the 5 o-clock cable at the diagnostic plug and wired it to a grounded push button switch in the cabin! Works great and is easy to use. When taking of, just push the button and let go to switch into 2nd. :-)
David T
06-02-2026, 10:00 AM
Update: it was a 30min job. Just disconnected the 5 o-clock cable at the diagnostic plug and wired it to a grounded push button switch in the cabin! Works great and is easy to use. When taking of, just push the button and let go to switch into 2nd. :-)

I would not depend on this. It might be OK for testing or to get you home but if you don't do it right you will damage the transmission. The proper fix is to get the governor (shift computer) working as it should.
eseethal
06-02-2026, 10:17 AM
David, thanks, yes, of course I will have the transmission computer repaired after the event. So far I cannot see a problem with my setup, as long as I only use it when accelerating from a stand still. I had another test drive today, a short push on the button, release and everything else feels normal :-)

thanks............Eugen