I'm connecting and ammeter on my '69 Chevy C10. Currently a 3 hole bezel and cluster circuit, but am adapting a new 7 hole bezel and wiring gauges separate, keeping the 3 hole cluster circuit. This original cluster circuit has nothing for an ammeter or voltmeter (I'm familiar with the electrical differences).
My question comes as a result of contacting "Autometer" which is the brand of gauge I will use. They say I do not need a shunt for their ammeter, yet all the YouTube videos instruct you to use a shunt. I can test it before installing it, but do I risk burning up an $80 ammeter? Also have not been able to find a shunt on over a dozen classic parts sites, nor Auto zone, nor O'Reilly's.
