VDO Gauges Install

[chromecarz00]

So I'm wanting to install these VDO Viewline gauges I just got.

Pin 1 - Term. 30 - battery 12/24 V
Pin 2 - Term. 31 - ground
Pin 3 - signal ground
Pin 4 - Term. 15 - ignition plus
Pin 5 - sensor signal
Pin 6 - Term. 58 - lighting

Where would I ground pin 3, signal ground, to? Pin 6 goes to light switch, and pin 5 is from the sender/sensor?

Do each of these have to have individual battery/ground wires, or can the be joined to one similar one?

Thanks

 

[Brett Proctor]

Well you didn't give much to go by so I had to search for a wiring diagram for the system.

Found this one
http://www.vdo.com/media/182647/flc_ammeter_en.pdf

Looks like pin 3 (b) goes to the sensor and pin 5 (a) goes to the other side of the sensor