I need help with wiring my new stereo and amp together. For my stereo I've purchased a double din JVC KW-X840BTS, for my amp I have the Kenwood KAC-M1814 400W, and I have a wiring harness adapter, the METRA 70-1882. According to the Kenwood wiring diagram, the yellow power wire for the amp can be attached directly to the power wire from the stereo. My question is, can I connect both the power wire from the amp AND the power wire from the stereo to the power wire coming out of my adapter harness, and have 2 wires drawing power from one source. Is that ok or is there some kind of splitter I need to buy? The same question goes for the black ground wires.Attached are two pictures showing exactly what I'm talking about. Any help would be greatly appreciated. Thanks!