It looks like you need to screw the center piece of the adapter together so the one end doesn't stick out so far.
What two adapters are you using?
It looks like a 510~901 adapter and a 901~510 adapter.
What I would do is separate these two adapters and then screw the 510~901 adapter onto your ProVari first. I would then turn the center piece clockwise enough that when you screw on the other adapter to this one it screws together completely. You want to make sure that you do not turn it in too far as this would prevent it from making a connection with the battery. When I use two adapters together like that I always put the one adapter on the battery end first, make any adjustments, and then I screw on the other adapter. It does make a difference with some adapters as to which one you screw onto what first, as the center section does move back and forth inside of the adapter. Once you have the two adapters set up right you can keep the two adapters together. Meaning you don't have to separate the two adapters every time you screw it on or off of your ProVari.
If you have a Digital Multi meter you could check for continuity through the center section of the adapter.
What two adapters are you using?
It looks like a 510~901 adapter and a 901~510 adapter.
What I would do is separate these two adapters and then screw the 510~901 adapter onto your ProVari first. I would then turn the center piece clockwise enough that when you screw on the other adapter to this one it screws together completely. You want to make sure that you do not turn it in too far as this would prevent it from making a connection with the battery. When I use two adapters together like that I always put the one adapter on the battery end first, make any adjustments, and then I screw on the other adapter. It does make a difference with some adapters as to which one you screw onto what first, as the center section does move back and forth inside of the adapter. Once you have the two adapters set up right you can keep the two adapters together. Meaning you don't have to separate the two adapters every time you screw it on or off of your ProVari.
If you have a Digital Multi meter you could check for continuity through the center section of the adapter.
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