WJG2

I was given a car alarm called The Electronic Cop which appears to be a good system. The problem is that the company has gone out of business (Hmmm, maybe it wasn't that good a system...) and the instructions don't cover pre-1980 911s. Mine is a 77. The package comes with the newer style two-prong glass fuses, while my car has the old style, torpedo-shaped filament fuses. For years 1980-86, the instructions say to use "power fuse No. 18 in the engine compartment and fuse number 16 as the interrupt circuit." Can anyone out there advise whether it's possible to adapt these instructions so I can install the unit in my car? Thanks.