Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
Bit late with the reply, but the moulded in wires for the masthead lighting are directly above the port bulkhead on our '84. You can confirm this by tracing your wires forward from the switch panel. This is the bulkhead aft of the head that is adjacent to the compression post. It would be impossible to mount a vent in a manner to cut the wires, unless you miss-measure. But then you've got a bigger problem when you hit the bulkhead!
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.