Electrical Diagram help C21

[TRIKAYAK]

Can someone please explain:
What does RL stand for?
What does VM stand for?
What does the symbol with the box enclosing 4 circles stand for?

Thanks for the clarification.

[jacquesmm]

Can someone please explain:
What does RL stand for?

Running Light

What does VM stand for?

VoltMeter

What does the symbol with the box enclosing 4 circles stand for?

A bus bar, a connection bar. See the legend to right.

That diagram is just a typical layout to give you a good start. Each installation will be different depending on your accessories and electronics.
Respect the color code, it makes maintenance and troubleshooting easy.

[TRIKAYAK]

thanks for the quick reply.