The 5000 has cables all the way up to the PCU’s with an interconnection tube at the front and centre. FWD interconnection is housing the disconnect mechanism and the centre mainly for the AP servo and trim. There are 2 PCU’s per AIL which come with LVDTs to feedback position for indication and the 2 FCU’s.
The spoilers (flight spoilers) are controlled by 2 FCU’s and always in pairs! Left outboard/right outboard and if a fault is detected both sides will stow. We have 2 sensors per side (fwd quadrant) which feedback the control column movements to the FCU’s, left sensor 1 to FCU 1, left sensor 2 to FCU 2, right sensor 1to FCU 1 and right sensor 2 to FcU 2. One channel is always active and one is monitoring, same for the FCU’s, each FCU has 2 independent channels which handle the spoiler pairs FCU 1 Channel A does the spoilers 1 on both sides and B does the 2’s on both sides.
feedback is done by LVDT’s for controlling and indication. Only the ground spoilers come with old fashion targets as they are either out or in.
as for the spoiler rigging comment, well everything is possible however it is hard to believe! There is only 1 PCU per spoiler and you only have 1 “giant” rod which you have to adjust. To short means you have to explain a lot to your boss as you need some new spoilers and to long they will show deployed once hydraulic is applied.
to my knowledge there is no reason to play with the control sensors at the fwd quadrant nor anyone with a bit of common sense can swap any connectors aa they come with different keys.