change the location of 2 gangway 2 way switch

[geezer01]

hi guys,
i want to change the location of the downstairs hall switch....the problem is there is not enough slack in one of the wires.

The switch is a 2 gangway 2 way switch for for the upstairs/downstairs hallway. I think its the 2 way wire which is not long enough...its got a grey, brown and blue wires inside the sleeving.

is there any way of extending the wire...i was thinking a juction box..if so what amp box do i need?

cheers in advance!

 

[Steve]

Whatever you use it must be accessible and within safe zones.