I am assuming the tacho head unit will be the receiving end for the plugs to er plug into.
I am guessing they are not std landrover plugs/loom, so you will need to trace them to see what goes where.
As the car is quite old it might have had an...
I think they lead to the other end of the wires that the plugs are on.
Why don't you trace where they go to and report back. We may then have some idea what they may be for.
Hi new here just got my Defender 90 Puma and on the passenger there is 5 plugs not connected to anything got no idea where they lead too. Anybody have any suggestions?