[Shotimes] Homelink?

[Bruce Malachuk]

Anyone out there know if the HOMELINK units found in many cars and trucks is
self contained in the small panel on the visor? I'm gonna be installing a
garage door opener on my garage, and was thinking about trying to find a
grey or black homelink unit that I could modify my sun visor with. I'd think
that if not 100% contained in the visor, there must be a small RF
transmitter in a vehicle. Though I have seen pics of how they tell users to
program the homelink, and they have them pointing the garage door remote at
the homelink unit on the visor, not that really means anything.
 
Thanks in advance if anyone knows
 
Bruce