because that's kind of a home brew marker, you best bet would be to look for someone else with one and see if they have a schematic, but a lot of those original markers didn't come with em. FAST is long gone, you might luck out and get a hold of the owners and talk to them. best of luck

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And shepards we shall be, for thee my lord for thee, power hath descended forth from thy hand, that our feet may swiftly carry out thy command. We shall flow a river forth to thee, and teeming with souls shall it ever be.
In nomine Patris, et Filii, et Spiritus Sancti.