The HiFi (Option 676) Add-an-Amp harness kit for RAM audio systems is designed to add a 7-ch aftermarket amp/DSP to the RAM module (cannot be replaced). Harness installs in between the RAM, keeping all OEM iDrive features intact while splitting the inputs and outputs to interface with aftermarket amp/DSP.
Warranty of harness is one year from the purchase date. Harness kit is designed for experienced DIYers. Professional install suggested. Support limited to harness install; no support given to aftermarket parts not sold with harness kit.