I want to wire them up at the moment so the Volt meter works and the lights come on. I've wired the -VE up and I've connected the +VE (Lights) to the Headlight switch (same way I've done my Boost Gauge).
I then connected a switched live the the +VE. Nothing happens.
But If I connect the +VE (Lights) to the +VE then the volt gauge shows 12 Volts and the Oil Sender goes all the way to the max.
Should the Oil Gauge do this if I haven't connected the Oil sender wire?
Can someone suggest which wires in my existing loom I should be using to connect to the the wires on the Gauges?