MMR-1/MMR-2 Digital Rear View Mirror with Temperature and Compass Installation

You may following below steps to complete the installation:
1. In the interior of the vehicle, remove the upper windshield trim, the driver’s side A-pillar trim and kick-panel (plastic trim panel on the floor by your feet).
2. Remove the factory rearview mirror from the windshield.
3. Install the new mirror.
If the mirror does not fit your vehicle, it may be necessary to replace your mirror button with a different one. Pre-1996 Ford units are a commonly compatible style.
4. Starting at the bottom of the dash on the driver’s side, feed the black, flat connector up to the opening for the A-pillar at the base of the windshield. Routing the wires straight up the pillar, pull enough through to reach the mirror.
5. Find an existing bolt to ground the black grounding wire to the body near the kick panel.
6. Next, find a switched power source that maintains 12 volts when each accessory is turned on.
For a neat installation, tuck the wires up above the headliner. Connect the red wire in the harness to the switched power source.
Mounting the temperature probe
7. Route the temperature probe to the front of the vehicle. The small square plug needs to go through the firewall into the passenger compartment to keep it dry.
The best location for the temperature probe is in the center of the car, in front of the radiator. The probe needs to be in free air; behind the bumper often works. Avoid placing it inside a wheel well or in the engine compartment; no higher than the center of the radiator and no lower than eight inches off the ground. Look for a location near the center of the vehicle, never outside the frame rails. Avoiding engine heat is essential.
8. With the ignition ‘OFF,’ plug the temperature probe in to the harness. Clip the probe to the mounting location chosen in the previous step.
9. Route the temperature probe harness to the passenger compartment and plug it in to the main harness.
Steps 10-13 are for MMR-2 mirrors only. MMR-1 mirrors do not have map lights.
10. Locate a constant power source, and connect the yellow wire (labeled ‘battery’) to it. This power source must maintain 12 volts even when the key is in the ‘OFF’ position.
11. There are two types of dome light circuits:
All GM, most Chrysler and some Fords have constant 12 volts to the dome light. Upon opening the door, the circuit is grounded and the lights come on. The wire at the switch will have 12 volts when the door is closed and 0 volts when it is open. Most full-size Fords and some Chryslers have two wires at the door jam switch. When the door is closed, there is 12 volts running through one wire, but not the other. Upon door opening, there is 12 volts on both wires.
12. Route the brown wire to the door switch and connect it with the proper wire. Again, the wire at the door switch must go from 0 volts to 12 volts or 12 volts to 0 volts upon door opening and closing.
13. Once the brown wire is connected, compare the map lights to the vehicle dome lights. If they work opposite one another, open the black box on the brown wire and flip the switch inside.
14. Double check that all wires are away from sources of heat, moving parts as well as the accelerator and brake pedals.

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