|April 3, 2016|
The FMU is divided into two, independently powered and independently operating units.. The sunroof/maplight controls and the FMU itself. This will be part 2.
Part 1: Sunroof/ Maplight controls swap
Part 2: Field Monitor Wiring/Install
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Time:
The wiring portion took me 2 hours, but this is the second one I have installed..
Procedure:
The goal for this section is to find a proper home for the wires from the Field Monitor Unit itself.
Here is the diagram for the wires on the white FMU plug:
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The following wiring directions involve following the wire colors on the blue plug.
An important note however is that the colors of the wires change depending on what side of the plug you are on.
This is the Console side of the plug:
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And this is the
Vehicle side of the plug:
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From [MENTION=5602]Rock Slide[/MENTION]'s write up. (with additions by myself)
Field Monitor:
1.
Blue/
Yellow wire coming off the female end of the White Plug, taps into the
Gray wire on the console side of the Blue plug
[Blue/Yellow wire on the vehicle side]. (full-time power)
2. White/
Red wire coming off the female end of the White Plug, taps into the
Red wire on the Console side of the Blue Plug
[Blue/Red wire on the Vehicle side]. (ignition power)
3. White/Black wire coming off the female end of the White Plug (this wire also could also be Gray), taps into the Black/
Red on the console side of the Blue Plug
[White/Black/Gray on the vehicle side]. (GROUND)
Clock:
4.
Green wire coming off the female end of the White Plug, taps into the Green # 3 wire on the back of the clock in the dash.
(I taped into the solid
Green wire coming off the back of the dash light dimmer knob)
Temp Sensor:
5.
Blue wire coming off the female end of the White Plug, connects to your Air Temp Sensor. (This Sensor needs to be installed behind the front bumper. It contains 2 wires. See next step for second wire connection.)
6.
Yellow/Black wire coming off the female end of the White Plug connects to your Air Temp Sensor.
Speed Sensor:
7.
Green/
Orange wire coming off the female end of the White Plug, taps into the
Grey/
Blue wire located at the ABS Unit.
Spliced into blue plug according to the above instructions.
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Connect longer wire to the remaining 4 wires (2 for temp sensor, speed sensor, Dimmer).
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Use a hangar and make a hook to pull the wires through the headliner. You will need to remove the visor and A-pillar trim for this.
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Then make sure the wires stay on the inside of the headliner and run them down the A-Pillar.
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For the dimmer.. As mentioned above, I cut into the green wire on the back of the dash dimmer knob.
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Now for the speed sensor, we need to find the speed sensor wire in the ABS ECU. Here is a diagram of the back of the ABS unit. For 99+ 4runners it is located under the driver's dash, next to the brake pedal. The Blue/Grey speed sensor wire is in the V18 plug, it should be number 16 on that plug.
Just remember that it is the
only Blue/Grey wire on the entire ABS unit..
View attachment 198700
Blue/Grey speed sensor wire located. (The other red wires are for the Andymod, ignore those)
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Ran wires to the temp sensor through the firewall and the engine bay along the drivers side.
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Final Product! (with some LED modifications listed below)
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