To carry out a quick check , run a heavy gauge cable from the back of alternator straight to live on battery , if the battery now charges , the problem is as outlined above , if there's still no charge , tis the regulator or alternator. (this is not a permanent fix)
Remember , CHECK ALL THOSE EARTHS.

The gauges are probably a different problem , sort the charging system first.
If you have to change the alternator , go buy one that has a built in..................................................................................

Oh , hope your enjoying it so far.

