Celsus Quadlock ISO Plug & Play Wiring Harness for Vauxhall - AIS2158
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Product Information
Full details
The Celsus AIS2158 is designed for Vauxhall owners (2003 onwards) looking to upgrade their factory audio system to an aftermarket head unit without damaging the vehicle's original wiring. Its primary benefit is the plug-and-play functionality that eliminates the need for wire splicing, though users should confirm their specific vehicle model's compatibility with the Quadlock connector prior to purchase.
All features
| Model Part Number | AIS2158 |
|---|---|
| Brand | Celsus |
Extended Product Information
FAQs
Does this harness support steering wheel controls?
The AIS2158 is a basic power and speaker harness; it does not support steering wheel controls on its own. A separate steering wheel control interface is required for that functionality.
Will this fit all Vauxhalls?
It is designed for Vauxhall vehicles from 2003 onwards that utilize a Quadlock connector. Always check your dashboard connector type before installation.
Is soldering required?
No, the harness is a plug-and-play solution designed to avoid the need for soldering or splicing.
What is the length of the harness?
The cable measures approximately 17cm in length.
Can I use this with a factory amplifier?
This harness is designed for standard speaker configurations. If your vehicle has a factory-fitted premium amplifier, you may need a more advanced interface.
Troubleshooting
The aftermarket stereo does not power on.
Verify that the Quadlock connector is fully seated and that the vehicle's fuse for the audio system has not blown.
Radio settings reset after turning off the ignition.
Ensure that the constant power (yellow) and switched power (red) wires are correctly aligned, as some aftermarket units may require these to be swapped.
No audio output from speakers.
Check that all pins in the ISO connector are properly aligned and that the head unit's wiring harness is securely connected to the AIS2158.
Pros and Cons
Pros
- Eliminates the need for permanent vehicle modifications
- Simplifies installation for DIY enthusiasts
- Maintains structural integrity of the factory wiring loom
- Ensures reliable power and signal transmission
Cons
- Limited to specific Vauxhall models post-2003
- May require additional patch leads for steering wheel control functionality
- 17cm cable length may be tight in some cramped dashboard cavities
Setup, Compatibility & Care
Before starting the installation, ensure the vehicle ignition is switched off and the key is removed. Locate the factory harness behind the dashboard. Connect the AIS2158 to the factory plug, ensuring it clicks firmly into place to guarantee a secure electrical connection. When routing the harness, ensure it is not pinched by the head unit or dashboard brackets to prevent short circuits. Avoid pulling on the wires directly; always handle by the connectors to prolong the harness's lifespan.