The Magnum and the X1 are the same with exception of some cosmetic bolt ons (including audio). The Magnum has the same wiring harness. If you opted for the upgraded audio it is the same as the stock X1. It added an amp, lids, and speakers. You will either need the amp or add one. The stick head unit has an amplified high level out pits for the front and a non amplified low output for the rear. The wires are on the left side behind the side cover, orange, orange/black, pink, and pink/black.