I recently installed some awesome BMW 3 series powered seats in my FJ62. I rigged up a 555 timer as has been described here any other places to trick the computer in the seats into thinking they are connected to a BMW. (It’s really just an intermittent 5v pulse that keeps thr seat control from timing out and going to sleep)
My question is how to power these power seats. It should use accessory power - only functional with the key turned half way or fully on. I don’t particularly want to run new wires from the battery and hood up a new relay from the ignition to get power to the seats.
What I’m considering (and stop me if this is too janky), is to splice into the power that the previous owner had wired up for a stereo amplifier located under the back bench seat. The existing amp wire is thick / large gauge, and like the stereo, it’s activated in accessory mode.
I get that the seat motors will draw a lot of power when being adjusted, but that will be pretty infrequently. I figure the worse that will happen is the amp will drop out for the moment when the seat is being adjusted.
How stupid is this idea? Should I just pull wire the proper way and do this right, or is it reasonable to run the power seats and stereo amplifier on a parallel circuit?
My question is how to power these power seats. It should use accessory power - only functional with the key turned half way or fully on. I don’t particularly want to run new wires from the battery and hood up a new relay from the ignition to get power to the seats.
What I’m considering (and stop me if this is too janky), is to splice into the power that the previous owner had wired up for a stereo amplifier located under the back bench seat. The existing amp wire is thick / large gauge, and like the stereo, it’s activated in accessory mode.
I get that the seat motors will draw a lot of power when being adjusted, but that will be pretty infrequently. I figure the worse that will happen is the amp will drop out for the moment when the seat is being adjusted.
How stupid is this idea? Should I just pull wire the proper way and do this right, or is it reasonable to run the power seats and stereo amplifier on a parallel circuit?