Car: 2010 Type S 1.8 GT
Join Date: 24th July 2017
Location: Bristol, UK
Thanked 6 Times in 6 Posts
Currently trying to do the same as yourself, since I've just upgraded the head unit too.
Not sure about the one you have, but on mine there's a Female USB port, which I can plug a Male-to-Male USB adapter into,
Then go from that, into the armrest USB connector with a Honda USB adapter (quick search should bring them up - can't post links myself)
Providing your head unit has a USB port, this should work for you too. Haven't tried it myself yet but will report back and let you know as soon as I've tested it.
Hope that makes sense!