Ditto on getting a Progressive Industries hardwired unit. They make great stuff.
Not sure what amperage unit you want, but I got the 50 Amp for our rig. With their hardwired units, you get a remote display unit that mounts inside your rig to keep on eye on power consumption and amperage draw.
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Ken and Terry
2018 Sunseeker 2430S-CD, nicely modified and carried by a 2017 Ford E450 Sport
Former Georgetown 330TS owner for 10 years with more mods than I can count, pushed by our 2017 GMC Terrain