So the relays for the power door lock actuators need a 12V constant source. I'm looking at my door and there's a set of wires that goes to the speaker, the mirror, and one that's free. Is that the 12V source that would be used for power locks if my car originally had them? Can I pirate that connection for my relay?

Oh yeah, and all these plastic plugs... are they standard automotive plugs (could I find them in a shop) or are they proprietary Toyota plugs (I just have to solder)?

Thanks.

I dont know about, hi-jacking wires, I would just run a line from the fuse block. On mine I just ran a whole nother wire from the battery to power all my stuff, and if you look in my profile, whoo theres alot.
DTE

Get a test light and check if there is constant power coming from one of the pins from the free connector... if so use it...

Good ideas... waiting on a voltmeter.

I guess then no one could tell me where they might have installed their actuator motors...