Mac IIc, System 7.5, and BNC video

Hello everyone,

I use an old Mac IIci for Apple II <-> PC transfers and messing around
with vintage software.

The 13" Mac Color Monitor is getting a bit troublesome, and I would like
to try using the computer with an old multiscan VGA monitor using BNC x
5 input. The apple video modes are all within its specs.

Will the Mac video work properly if I simply use a DB-15 to BNCx5 cable?

If the Mac can't get (or gets incorrect) sense data from the monitor,
can the user set the monitor type manually?

I appreciate any help,

Dave