Hook-ups

Same way as you connect most things...one at a time ans test as you proceed.
Del
(By the way your question is so vague as to be almost meaningless)

In most cases, you should start be reading the instrument manufacturer's instructions. They will usually tell you what size of wire and type of shielding may be needed. The local electrical code may govern any power wiring, and any control wiring above a certain voltage. Low-voltage sensor wiring depends mostly on shielding requirements.

It's also good to know what the test is measuring and at least one method how this is done. You will find this from a good education.

In all cases, follow the original equipment manufacturers' instructions.