What are the key Extra Guages a Vanagon Automatic Watercooled should
have?

Can anyone instruct me on what is needed to install an Oil Temp Gauge,
Water Temp Gauge and Volt Meter.

I was thinking that it might be a good idea to know how hot the engine
is getting while driving on my cross country trip out west.

Additionally I have 2 batteries in the van and wanted to install a
single volt meter with a toggle switch which would allow me to monitor
the health of each battery.

Anyone recommend using any other gauges other the VDO?

Anyone every use Sunpro Gauges?
- they have them at Advance and AutoZone.

Ideas, places where I can get the parts? comments?

Thanks in advance.

Robert
NY