aftermarket water temp gauge?

[Hoodooman]

I'd like to add two aftermarket temp gauges, one for each head. My stock gauge also works. Is there a way to keep the stock gauge working If I add aftermarket too? I assume I can't get the stock gauge to work on an aftermarket sender or vice versa.

I'll be adding voltmeter and oil pressure too. stock 6 volt system.

Thanks for any help.

52 customline 8ba