Hi,

I know similar topics have come up before, but I can't find any reference to my idea.

Hijack is able to Force AC mode depending on tuner ID or presence of tuner serial loopback. However, IIRC, this does not allow one to perform flash uploads while the riocar is powered from the dock connector.

Something I've noticed about the dock power connections (and correct me if I'm wrong please) is that the ignition sense is wired together with the positive lead of the AC connector. Connecting +12V to the dock's ignition sense and 0V to the dock's earth seems to power the player up exactly as if power were coming from the AC connector.

The dock's permanent +12V connection is wired totally seperately.

My question is this. Has anyone given thought to building a very simple N.C. switching circuit powered from the permanent +12V connection and connected in parallel to the mechanical switch on the AC socket? Preferably a solid state circuit, but a relay should work fine as well. Has anyone experimented with this idea?

To elaborate, when the player is docked at home, the power is connected to earth and ignition sense. Permanent +12V is left unconnected and in so doing, the switch is closed and the player thinks it's connected via AC. When the player is in the car it has to get +12V to Permanent power for the sleep/unsleep function to work on ignition. When +12V is connected to Permanent power, the switch is in an open state and so normal car operation is detected.


Thanks,
Aragon