No except the power for the new deck is going to need a 15 to 20 amp circuit. I usually run a wire directly to the battery with an inline fuse holder at the battery and I use 12 to 14 guage wire. There is an easy grommet to go through behind the battery and if you remove the glove box liner it is an easy wire run. By the way the fader will be bypassed.

Scott

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The Mercedes Specialists Since 1986