HI, I HAVE A 1989 TURBO WHICH IBOUGHT ABOUT8 YEARSAGO, MY SON WHO WAS8 YEARS OLD AT THE TIME WASLOOKING AT THE CARWITH A BIG SMILE WHEN THE OWNER NOTICE HIM, HE ASK ME IF I WANTED TO BUY THE CAR , WHEN I TOLD HIM I COULD NOT AFFORD IT , HE THEN SAID WHAT CAN YOU PAY FOR THIS CAR, I TOLD HIM I HAD $4000.00 PUTAWAY, WELL HE SOLD ME THE CAR WITH A CATCH IF A BOUGHT THE CAR I COULD NOT SELL IT UNTIL MY SONWOULD START DRIVING, WELL I AGRRED AND BOUGHT THE CAR FOR MY SON. WE KEPT IN TOUCH, HE WOULD CALL ME AT LEAST TWICE A YEAR.THE CAR RAN FINE WAS IN PRETTY GOOD SHAPE,I DROVE IT FOR 2,000.00 MILES O SO THEN PUT IT AWAY. 3YEARS AGO PULLED IT OUT AND ME AND MY BOY GOT TO WORK, DID WHAT I KNEW WHICH IT WASN'T MUCH THE REST SEND IT OUT GOT ENGINE REBUILD , BALENCE,NEW TURBO GOT THE SEATS DONE NEW PAINT THE WHOLE WORKS IT IS NOW COMPLETE IT'S A SHOW CAR ,PROMISE COMPLETED MY SON LOVES THE CAR, DAVE THE MAN WHO SOLD ME THE CARCOULD NOT BELEAVE HIS EYES I NEVER TOLD HIM WHAT I WAS DOING.NOW THE ALARMCAN ANY BODY TELL ME HOW THE ALARM WORKS,HOW IT TURNS ON AND OFF ECT.

 

The Porsche Doc might be able to help you here. Have you got a Haynes Repair Manual or equivalent to view the wiring layout etc to the Alarm?
Big Bob