looks like you have the same manual as me!
There's only one way to find out now - will let you all know what happens!
It's not the connector that's the problem - it's the cable! My A- frame is made from thick walled Ally tube, I/D 30mm. the "crossbar" at the top is welded onto the verticals (whoever made it presumably had no bending machine to hand) and the resulting weld at the join by the time I have suffed the Nav light, ARW, and two VHF antenna cables through I'd be lucky to get a single core out a telephone cable through the space that's left at the join!
As the frame is also getting in the way of an Aux installation I will be replacing it sooner or later, hence just needing a temporary fix for the new toy.