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JVC headunit oranges with white stripe (illumination wire).

I am installing a JVC headunit in my car and i brought a control harness so that i can still have use of my steering wheel controls but on the secondary harness coming from the JVC headunit it has three cables which are not connected two i understand why the are not connected but the orange with white stripe wire which states in the wiring diagram as illumination i have no idea if i need or not. Could someone please tell me what this wire does and if needed where it needs to be connected to? Thanks Daniel.

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As far as I know, If the illumination wire is connected, the radio dims the display when headlight is turned on.

Posted on Mar 10, 2012


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Ok i need to know how to assemble the steering wheel

Steering Wheel Removal & Installation Special Service Tools (SST) Required:
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  • J42578 Steering Wheel Puller Legs
To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Place the ignition into the OFF position.
  3. Perform the SIR System Disabling procedure.
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  5. Scribe an alignment mark onto the steering wheel hub in line with the mark on the steering shaft.
  6. Loosen the steering wheel nut.
  7. Position the steering wheel nut flush with the end of the steering column shaft.
  8. Loosen the steering wheel using the J1859-A SST.
  9. Remove or disconnect the following:
    • The steering wheel controls electrical connector (if equipped)
    • The horn switch lead from the steering hub
    • The steering wheel nut
    • The steering wheel from the steering shaft
    • The steering wheel controls and the steering wheel controls harness from the steering wheel (if equipped)
To Install:
  1. Install or connect the following:
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    • The mark on the steering wheel with the mark on the steering shaft
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      The fastener is prevailing torque type and may only be reused if the fastener and its counterpart are clean and free from rust and the fastener develops 27 inch lbs. (3 Nm) of torque or drag against its counterpart prior to the fastener seating. If the fastener does not meet these criteria it must be replaced.
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      1. Torque to: 33 ft. lbs. (45 Nm)
    • The horn switch lead to the steering hub
    • The steering wheel controls electrical connector (if equipped)
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    • Enable the SIR system.
  2. Ensure that the steering Wheel controls operate properly (if equipped).
  3. Ensure proper horn operation.
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Jvc car audio KD-PDR51installation problem

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the wires being reversed on the harness also may not activate an internal relay allowing the steering wheel functions to operate.Switch the 2 power wires, and re-try.

If the steering wheel controls still fail to operate properly, your module may be defective.

Post your results.

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