Yes. Buy one. From the helpful people on this forum I added one to my new trailer first thing (Progressive Industries 50 amp permanent inline) and the first trip out it found a fault . My friend in helping me hookup loaned me his "spare" power cord because i was a bit far from power post. The unit wouldn't let system power up and showed an error. I looked up error. It was no ground. I checked his cord. Ground was bad. He didn't know. Now he does. I used a different cord. All good. So day one. It may have saved a life. Awesome unit to have.
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2020 GMC 3500 Denali Dually Duramax 6.6
2013 Fuzion 342 ToyHauler (Ours)
2011 Harley Davidson Streetglide custom (Mine)
2012 Harley Davidson TriGlide (Trike) (Hers)
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