Thanks @Frederic, @Thomas Varghese, @Rizwanm2 👍.
Regarding wiring, yes it goes under the body and the compressor is at the back of my truck with custom made weatherproof cover 😅. Nothing fancy but does the job!
I had the same issue when I ran a direct connection from the battery to the compressor. Had to get a heavy duty single core wire (repurposed a new heavy duty jump start cable) along with AC power switch.
I have used the compressor for more than 10 times now, inflates 4 tyres in one go under 10 mins using the single pipeline. So far so good!