There is a few different way's that it has been done by the Peep's on here try doing a search or just cruise thru the old post that's the way's that i have found stuff that i wanted to find out about Good Luck I'm sure Someone will chim in about this also.
It is a 1989, I saw that the ski comes with a factory pump trim nob??? was just wondering if all I would need is the a.m. trim lever and longer cable so I can locate the switch on the bars HELP PLEASE!!!!