I connected a JVC m750bt to a Holden Astra ah using this ISO connector worked flawlessly just had to break the little tongue clip as it seems suited for Kenwood; the plug pinout is all good for both
This harness saves time, and of course helps remove the unit if you should get a different car.
Should you need to work under the dash with the HeadUnit attached it also gives you the extra length of cabling for convenience.