Originally Posted by GradeA_TireFryer
just installed the alpine 310 - i think
bye passed the warning screen with a relay and monatary switch - works real slick
these new units dont just need a ground or signal from parking brake but need to have them applied in a sequence in order to work
check you manual to see if it need to be applied a certain way - the alpine needed to see the parking brake -on then off - brake pedal - then paking on again.