I HAVE A 97 FORD TRANSIT(yes i no its old but there great vans)AND WHEN I GO TO TURN THE ENGINE OFF NOTHING HAPPENS.IT STARTS WITH DA KEY GRAND.I GOT IT FIXED BEFORE BUT ONLY LASTED A FEW WKS.IS THERE ANYONE HAD THE SAME PROMBLEM AS ME AS I THINK IT A COMMON THING WITH DA OLDER TRANSITS.I HAVE BEING TOLD IT COULD BE SOMETHING TO DO WITH POWER JUMPIN FROM 1 WIRE 2 ANOTHER.THANKS