For all of you people who own a Vigier guitar and get nuts from the output getting loose all the time. For this particulair guitar it is very hard to tighten the jack again. Here is a simple modification.
1. This output is used standard in the guitar. It is a Switchcraft tube jack that can be only tighten from the inside of the guitar. And there, in the electronic cavety there is no space to use standard wrenches or plyers.
If you are not careful you ruin the thread and have to drill out the complete jack.
2. I replace them by a Switchcraft tube jack that is used for acoustic guitars, the ones that are output and strap holder.
3. I remove the strap holder washer and just fit the tube in the guitar. It now can be tighten from the outside with a regular 13mm pipe wrench, although you want to hold it from the inside to not twist and loose your electronic connections.
It might not look THAT pretty; it is very practical, and to connect the cable is really no problem.
Fern's Guitars BLOG 
But you will also have to tighjt it from the inside to keep/prevent wires in place/from moving…
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Hi! Good point. You can hold it from the inside and tighten it from the outside. The problem here basicaly was that there was inside hardly room to move a wrench to tighten the jack.
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