This page gives installation advice how to install PC3-09 into Range Rovers with Clarion Head unit and Harman Kardon upgrade, when replacing the Head unit with an aftermarket unit. See More Information button on Main Range Rover page to see if this applies.
Installation Advice > PC3-09 Connections For Range Rover
When you have established that PC3-09 is required, follow this page to assemble the PC3-09 and install it with the new head unit.
When you receive the PC3-09, you need to clip the wires into the black 10 Way ISO connector provided. Looking at the front of the connector as shown in the picture below, the pins need to connect to the corresponding pins on the new head unit connector.
The wires supplied by the PC3-09 are both marked Front, but use one set for the rear connections as if marked Rear.
Wires for the Sub woofer are currently not supplied with the PC3-09, and a high powered head unit would be required to run the subwoofer, we don't recommend this is connected without a properly adapted part.
The Black wires supplied with PC3-09 are not connected to the 10 Way ISO block, but would be connected to the Head unit earth connection if there is interference ground looping when testing the system.
If you new head unit only has Two RCA connections, then use adaptor PC1-1M or PC1-2M from this page below.
http://www.nexxia.co.uk/CarInstallaccessories/phono-leads.htm
You will also need to power the original amplifier when the new radio is turned on. To do this you can either move one of the pins on the original connector, or add a connector to the new head unit.
To change the original car connector, you need to move the Grey and Black wire from its current to position to a vacant position connecting with the blue wire on the new radio, see picture below. This will signal the amplifier to power on when the radio is turned on.
Alternatively if you do not want to move the original wires, you can use the Red Wire supplied with the PC3-09 and clip this into the correct position on the new Radio ISO block, such that is connects to the Grey and Black wire. Connect the other end of the Red Wire with the blue, or blue and white wire which gives +12V when turned on, sometimes marked Antenna +12v or Amp Remote.
Test the system before fully installing the head unit.
A number of customers have experience a few problems when installing the PC3-09, please see below.
1) Feedback through the
speakers some time known as ground looping
Explanation - it can be caused by bad earth on the existing
amplifiers.
Solution - Try improving the earth on the existing amps, add extra earth straps from the case to chassis if neccassary.
Also try connecting black wires supplied with PC3-09 to head unit ground either on the iso block or casing.
Note:- if amplifiers fitted are Nokia then it might not be resolved or a possible to resolve.
2) Very quiet even on high volume.
Explanation - existing ISO block connection may have speaker connections pin populated and therefore does not require the PC3-09.
Solution - Reset head unit to low volume and try direct connection of the vehicle to the new head unit.
For more information, please e-mail Technical@nexxia.co.uk
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© 2004 Nexxia Designs Limited. All rights reserved.
Revised: May 22, 2007