My searching says VHF is too short to include in search (I only get postings on the entertainment system), so posting here. We have a 22S and purchased a Standard Horizon Explorer GX1800GB VHF with GPS radio. Cannot find installation instructions anywhere and honestly the only idea we had was to buy a plug and plug it into the accessories port. That cannot be the only way to do this. Total newbie so please forgive if we are being idiots. Is there some way to insert into the helm, or does it need external brackets? Doesn't everyone need a marine radio and why is it so hard to find instructions on putting it in?