One-touch sunroof?

[Splinter]

Anyone tried to rewire their sunroof to fully close/open with a single touch, instead of having to hold it down?

[professor]

should be simple by adding an appropriate 12V relay

if the sunroof has built-in switches to turn the motor off when at the limits

without limit switches it would be hard to do, I don't think time would be reliable as they run slower in the winter when cold

[vrg3]

The way most one-touch window and sunroof dealies work is by detecting an increase in current drawn by the motor as it stalls.

I think there are kits from Clifford or somesuch to do this.