Something I want to do to a Ford is put in a TC lockup override on a 2001 excursion, 4R100. Is that shit pwm or just send it 12v, diode needed to not backfeed the ecm? gonna run it through a added on brake pedal switch. just so I don't forget and I gotta figure out the scheme to make that a reset not just relock when I let of the brake. Or should I just order a obd2 tuner? I have forscan on my laptop but I'm not about to fuck around and find out with junk that ain't mine.