I have Viair 300p - alligator clips have an inline fuse with a 40 AMP. Not sure if that helps for running power. Thinking about putting Quick connects coming from battery to quick connect on the Viair cables to run power. Instead of the 7 Pin .
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7-Way Power Access Connector
Have you ever thought about powering your compressor from the trailer hitch plug? We have! Make inflation more convenient with our automotive-grade 7-way power connector. * Be sure to check your auxiliary power circuit rating to make sure it supports the max amp draw of the compressor you're using.viaircorp.com
Second this, I have the 400P EF A [30amp max] and it works well with 7-pin port. It connects and disconnects quickly.I have been using this 7-pin adapter to power the Viair 84P/85P inflator from the rear exterior 7-pin port without any issues:
I bought it on Amazon, but Tractor Supply may have it at a lower price currently.