fitting a dab radio in disco 2

hi bought a pioneer dab radio for my disco also bought steering wheel control and a autoleads dab ariel but when i took old alpine l/r item out it has a block of 3 connectors yellow blue and green that i assume go to the controls in the boot and i have no where to conect them so im assuming that they wont work anymore any clues would be appreciated

The three blocks if I remember correctly are for the cd changer, subwoofer and the headphone controls in the boot so you will lose all three. You can get blanking plates for where the headphone controls go.