Terry if I go with electronic sender gauges can I use my existing sender out lets from the block and head and just plug the wire to the existing spade terminal. Or does each new gauge rely on it's new sender unit?
The sender normally matches the gauge so it is easiest if you get the sender that works with the gauge.
If the Moke has previously had gauges fitted then the snders in your block may be useable, you need to look at the sender closely and see if you can read the brand and range that, for example, VDO will have stamped in the flats of the sender.
If you are possibly referring to the sender in the oil pressure connected to your light on the dash then it is a only an on/off sensor and can't be used with gauge that is expecting an electrical resistance across a wide range.
Terry