NAV-TV M650-GM Installation Guide

GM IO5/IO6 M.O.S.T. 50 to RCA, SPDIF & TosLink sound processor

NTV-KIT838

BHM

08/11/17

NTV-DOC303

3950 NW 120

th

Ave, Coral Springs, FL 33065 TEL [phone] FAX [phone]

BHM

08/11/17

NTV-DOC303

2 | P a g e

M650-GM Interface

NTV-ASY264

NAV-TV’s M650-GM processor seamlessly converts GM’s MOST-50 audio bus to low level (6 channel) RCA,
S/PDIF or TosLink outputs. Adding an aftermarket amplifier to the OE IO5/IO6 system has never been so easy
or seamless. This plug & play kit integrates with various OEM data networks to retain OnStar, door chimes,
volume control, full fade and balance (analog only), treble, mid-range, bass control & Bluetooth voice calls
with no external speaker (true OEM integration).

M650-GM overview

Overview

Kit Content

Plug & Play T-Harness

NTV-HAR310

USB Cable (updates)

NTV-CAB009

Power/MOST50

connector

LED status

USB (updates)

TosLink output

Coaxial S/PDIF output

FRONT Analog OUT:

Red: Right

White: Left

SUB/CENTER Analog

OUT (mono):

Red: Subwoofer

White: Center

REAR Analog OUT:

Red: Right

White: Left

WARNING: Do not connect any RCA cables to the M650-GM interface or

additional processors prior to properly grounding aftermarket amplifier(s)!

DIP switches

BHM

08/11/17

NTV-DOC303

3 | P a g e

IO5/IO6 OEM GM radio tuner

M650-GM Installation

Proper connection for the M650-GM requires gaining access to the OEM radio tuner module. Known locations
are listed on the chart below:

Vehicle

Radio Tuner Location

ALL Trucks/SUVs

Behind Screen