The i4 HK(688) Booster harness with external OEM Subwoofer is designed to add an aftermarket mono amp to the OEM Booster to power the OEM sub, or any aftermarket sub with OEM connector.

LOC150i kit includes:

• LOC150i 40V max input, adjustable Parametric EQ, Bass Boost, signal sensing remote Line Output Converter (LOC)
• LOC150i Power/ground/remote out/input PnP cable
• LOC150i RCA cable (24″)
• OEM Subwoofer interface input/output cable connectors T-harness

The LOC150i accepts the 25V+ peak outputs of the OEM Booster and provides remote turn-on via signal sensing. Remote turn on active when LOC detects an audio signal from OEM amp, turns off when no signal is detected. External remote turn-on signal required (and not provided) only if aftermarket amp turn-on must be independent of volume level. 

HK (Option 688) Add-a-Sub Harness for RAM/Booster audio systems with OEM Subwoofer is available in 2 versions:

• OEM Booster/Subwoofer T-harness only – no LOC150i
• LOC150i : Gain adjustment, adjustable Parametric EQ, Bass Boost, signal sensing remote, signal clipping indicator

Please note that this harness/LOC150i does not and cannot replace the OEM Booster. This product does not work with iDrive 6 systems. Harness plugs into the i4 HK OEM Subwoofer connector.