TOP VEHICLE TECH GR3VXL4 User manual

www.topvehicletech.com
The informaon provided in this document is subject to change without noce due to changes and/or
improvements to the product/s.
V1.0522
VAUXHALL
CORSA 2000-2004
MERIVA 2003-2007
OMEGA 2000-2003
VECTRA 1998-2004
INSTALLATION MANUAL
This dash image is a visual representaon for display purposes only.
GR3VXL4

2
www.topvehicletech.com
ABOUT THIS PRODUCT
The GR3VXL4 installaon kit allows for the retenon of the vehicle’s steering wheel controls and maintains the
original aesthec of the interior when installing a new car stereo. The GR3VXL4 gives you everything you need
for a complete install in one box. The components of this kit are compable for the following vehicles with
either CAR200/CAR300/CAR400/CDR500/CCR600/CAR2003/CAR2004/CCR2006/CDR2005 factory stereos:
Corsa (C) 2000 - 2004 Meriva 2003 - 2007 Omega (B2) 2000 - 2003 Vectra (B/C) 1998 - 2004
The wiring harness and interface will help to retain the steering wheel controls with the new stereo.
Supplied with an 8-Way ISO connector.
CUSTOMER SUPPORT
Installaons should be carried out by, or under the guidance of an experienced installer. If you do encounter any
problems during the installaon of this product, then please contact our dedicated customer service team at:
Phone: [phone] E-Mail: [e-mail]
CONTENTS
• 1x Fascia plate
• 1x Instrucon manual
• 1x Steering wheel control harness and interface
• 1x Antenna adapter
• 1x DAB antenna adapter
• 1x Stereo patch lead

3
www.topvehicletech.com
FITTING GUIDE
FASCIA PLATE SET-UP
1. Take the new fascia and simply place it into the opening made by the OEM radio.
2. With the cage secured into place, and once the “Stereo Installaon” process is complete, simply slide
the stereo into the fascia.
1. Open the passenger side door and proceed to pull away the door trim from the pillar.
STEREO REMOVAL
DAB ANTENNA INSTALLATION
2. Using a set of panel removal tools, begin to pry away the pillar casing.
4. The DAB antenna not only has a self adhesive backing, but also features a black earth sheet. When
placing the DAB antenna, the earth sheet MUST be placed onto the metal part of the pillar. The antenna
itself must be located roughly 15cm from the top of the windscreen.
Note: this antenna must not be placed atop any kind of heang elements, this will interfere with the
antenna’s signal.
5. Once happy with the placement, take the 3m of wiring extension and feed it down through to the
stereo’s opening. With the wiring adjusted to the appropriate length, feel free to re-install the glovebox.
3. The glovebox will need to be dropped down to route the antennas wiring. To do this, remove the 2x
screws located within the lip of the glovebox, as well as 2x located underneath. Once free, pull out and
drop down into the footwell.
1. Using a set of radio removal keys, insert them into the holes located out toward the edges of the radio.
2. Once done, simply pull the radio out of the dashboard and disconnect all of the wiring.
3. The pre-installed OEM cage will need to be removed from the dashboard to make way for the new kit
components.

4
www.topvehicletech.com
FITTING GUIDE
STEREO INSTALLATION
5. When all the above wires (and any addional accessories) have been connected, nally make the
connecon between the stereo and the vehicles pre-exisng connector.
4. Aach the antenna adapter to the vehicles pre-exisng connecon and the back of new stereo.
3. Connect the DAB antenna’s SMB connector to the back of the new stereo.
1. Take the steering wheel control interface in hand and connect both the 12-way stereo patch lead and
the 14-way steering wheel harness connectors to the corresponding sides.
2. Connect the bullet connector from the stereo patch lead to the ‘steering wheel remote input’ on the
back of the new stereo.

5
www.topvehicletech.com
Please note: conguraon layout may dier dependent on vehicle model.
STEERING WHEEL CONTROL FUNCTIONALITY
1
2
3
4
5
1. Track +
2. Track -
3. Volume +
4. Volume -
5. Source
1. Right Arrow
2. Le Arrow
3. Volume +
4. Volume -
5. Source
Original Buon New Funcon

6
www.topvehicletech.com
ISO Connector
Connect to new stereo
8-Way ISO Connector
Connect to connector from vehicle
Main Wiring Loom Connector [14 Pin]
Connect to Interface Box
Interface Box
Stereo Patch Lead Connector [12 Pin]
Connect to Interface Box
Note: Must be connected first, before
power connection is made to the
interface
Stereo Patch Lead Bullet Connector
Connect to ‘Steering Wheel Remote
Input’ on back of the stereo.
WIRING DIAGRAM

7
www.topvehicletech.com
NOTES

8
www.topvehicletech.com
If at any point you experience any problems and need any assistance before, during or aer the
installaon process, please contact us via :
Phone: [phone]
E-Mail: [e-mail]
Mon - Fri 9am - 5.30pm GMT
TECHNICAL ASSISTANCE
If you would like to download a digital copy of this manual, or any other product, then please
visit the www.topvehicletech.com website.
This manual is considered correct at the me of prinng but is subject to change. For the latest
manuals & updates, refer to our website.
Copyright 2022 by TopVehicleTech.
All rights reserved. No part of this publicaon may be reproduced, distributed or transmied
in any form or by any means, including photocopying, recording, copying or other electronic or
mechanical methods, without the prior wrien permission of the author.