Book a reliable car head unit installation service in Hurstville

Hello I have and aftermarket android head unit and need to be installed on honda jazz 2018 vti-l (the one that has back camera and gps). The aftermarket android head unit doesn't come with the correct harness so i'm just wondering if someone still can installed the android head unit while still using the factory backup camera? Thank you Update: Now it has the correct harness but missing the step down voltage convertor, steering wheel works but the phone pickup and hang up doesn’t. So just wondering if someone can solder in some cable and voltage convertor. Thank you - Due date: Flexible

I want to install head unit in Toyota Yaris sedan

Got sony AX1000 head unit for Mazda 3 (2011) Got fascia and required harness for it Need to install head u it and reverse camera as well