148 Products
CELSUS
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Celsus parts for fitting and connecting car audio
The Celsus products represented here are practical installation components. Of 148 items, 142 are classed as audio-visual equipment. Aerials, antenna adaptors and leads form the largest group, followed by fascia panels and head-unit fitting parts. Release tools, ISO or Quadlock connections, radio cages, cable, acoustic covering and fixing materials support the same task.
This is important because the name alone does not identify the required piece. A complete head-unit installation can involve four distinct compatibility layers: the radio aperture, the vehicle's wiring and data functions, the aerial signal path, and physical mounting. Each layer needs its own check before trim is removed.
What the Celsus selection covers
| Product group | Examples represented | Information to establish | Do not assume |
|---|---|---|---|
| Aerials | Roof, wing, glass, electric and machinery-mounted AM/FM or DAB units | Band, active/passive operation, mounting, connector, power and cable route | That every antenna receives both analogue and digital radio |
| Antenna adaptors | Male/female adaptors, Fakra conversions, extensions and amplified-aerial feeds | Connector at both ends, gender, signal band and phantom-power requirement | That matching plugs preserve power or diversity functions |
| Fascia panels | Single- and double-DIN panels for named models and years | Dashboard version, aperture, colour, side, build date and supplied brackets | That all dashboards in one model generation share the same shape |
| Wiring and control interfaces | ISO leads, Quadlock leads, extensions and head-unit connections | Vehicle connector, radio interface, data functions, amplifier and control retention | That wire colour or connector fit proves circuit purpose |
| Mounting tools and hardware | Release keys, radio cages and installation fittings | Head-unit locking design, cage size, tang positions and access | That generic keys release every factory radio latch |
| Finishing materials | Acoustic cloth, carpet, tape, spray adhesive and loom tape | Surface, temperature, flexibility, coverage, curing and product safety data | That one adhesive suits every plastic, fabric or hot interior location |
Start with the vehicle and head unit
Record the vehicle make, model, body style, build date and dashboard version. Registration-based data can narrow the choice, but inspect the actual connector and aperture because factory navigation, premium audio and mid-production changes can alter the installation. Record the head unit's single- or double-DIN chassis, connector sockets, aerial input and any separate microphone, USB or camera connections.
List the functions that must remain. These may include switched power, illumination, steering-wheel controls, parking-sensor tones, original amplifier wake-up, subwoofer, USB socket, hands-free microphone or vehicle settings displayed by the original radio. A simple passive lead cannot recreate a function that depends on a data interface or active adaptor.
| Compatibility layer | Vehicle-side check | Head-unit-side check | Confirmation |
|---|---|---|---|
| Mechanical opening | Dashboard profile and retained trim | Single or double DIN; screen projection | Fascia listing, measured aperture and clearance |
| Power and speakers | Connector family, circuit pinout and factory amplifier | ISO or proprietary loom and output type | Wiring diagrams and interface instructions |
| Aerial signal | AM/FM, DAB, diversity and aerial amplification | Input connector, required bands and phantom power capability | Exact adaptor description and powered-aerial test |
| Controls and data | Steering controls and vehicle-network functions | Compatible control input and patch lead | Interface application plus radio compatibility list |
| Physical depth | Ducting, braces and wiring space behind dash | Chassis depth, plugs and heat ventilation | Trial fit without forcing loom or blocking airflow |
Fascia panels, cages and release keys
A fascia provides a finished transition between the dashboard and replacement radio, but it must not be used to force an oversized or misaligned installation. Compare photographs as a secondary check after the Celsus reference and application notes. Pay attention to left- or right-hand-drive distinctions where stated, climate-control layout, factory screen, hazard switch and button positions.
Remove original trim with the correct sequence and non-damaging tools. Hidden screws, spring clips and airbag-related panels may be close to the radio. Use release keys intended for the latch design, insert them in the required orientation and pull evenly; excessive levering can bend the cage or mark the dashboard.
When fitting a cage, fold only the necessary retention tabs onto strong surfaces. Ensure the radio locks and can still be removed by its intended method. Support heavy or deep units as specified, route plugs without crushing them and leave ventilation openings clear. Test first, then complete final clipping of the fascia.
Aerial bands, mounting and reception
AM/FM and DAB operate through different broadcast arrangements, so an antenna must be designed for the required service. The official Celsus product structure separates roof, glass, wing, electric and magnetic mounts as well as adaptors and replacement whips. Some products combine bands; others do not. Read the individual specification.
Active aerials contain amplification and require the stated supply. A passive aerial does not. If the vehicle has a factory amplified aerial, a phantom-power adaptor may be needed to feed voltage through the coaxial path. Celsus lists standard Fakra conversions as well as a separate Fakra adaptor described with 12V signal separation, showing why connector shape and electrical function are separate decisions.
For a glass aerial, clean and prepare the exact area described in the instructions, respect temperature and curing requirements and avoid heater elements or obscured visibility. For drilled roof or wing mounts, inspect both sides before making a hole, protect bare metal against corrosion and seal the mounting as directed. Confirm underside clearance from airbags, roof mechanisms, wiring and reinforcement.
Connector families and cable routing
| Description seen in this range | What to verify | Common error |
|---|---|---|
| DIN or ISO aerial connection | Exact vehicle and receiver socket plus male/female orientation | Treating similar round coaxial ends as the same standard |
| Fakra | Housing/keying, gender, single or dual/diversity use and power path | Removing keyed housings to make an unsuitable adaptor fit |
| SMB or SMA | Connector series, gender and straight or right-angle clearance | Confusing names or judging the tiny thread/snap interface by image scale |
| ISO power/speaker blocks | Pinout, switched and permanent feeds, speaker wiring and mute functions | Connecting by wire colour without checking the vehicle circuit |
| Quadlock | Lever-lock seating, inserted modules and retained data or amplifier circuits | Forcing the lever while a terminal or insert is misaligned |
| Extension lead | Connector ends, impedance/function, length and signal losses | Coiling surplus beside power cables or leaving joints unsupported |
Route signal cables away from high-current power wiring where practical and cross it at right angles if necessary. Protect all cable passes through metal, add strain relief and secure the loom without overtightening ties. Do not run wiring through airbag deployment paths, seat runners or sharp trim edges.
Power, fusing and factory systems
Before disconnecting the battery, follow vehicle guidance for keys, alarms, battery monitoring, security codes and window or steering calibration. Some vehicles need a prescribed shutdown period. Never probe an unknown connector with a test lamp that could load a sensitive circuit; use suitable diagrams and measuring equipment.
Any added power circuit needs conductor size and fuse protection appropriate to its current and length. Place the fuse close to the source so most of the wire is protected. A larger fuse is not a cure for nuisance operation. Find the short, excessive load, poor termination or incorrect cable first.
Factory amplified and networked systems often need an active interface, not only a plug conversion. If sound is absent, excessively loud, distorted or accompanied by warnings, turn the system off and verify the interface, gain structure and wiring rather than experimenting with random pin changes.
Acoustic cloth, carpet, tape and adhesive
Acoustic cloth is intended to allow sound through while covering a grille; carpet provides a finish for enclosures or trim. Cut materials with allowance for curves and seams, dry-fit before applying adhesive and keep fabric clear of speaker cones, vents, latches and moving parts. An acoustically open cloth is not a structural grille or impact guard.
Use adhesive and tape only on compatible, clean surfaces within their stated temperature and preparation requirements. Read the safety data and ventilation instructions for spray products. Mask connectors and finished trim, apply controlled coats and allow the specified flash or cure time. Excess adhesive can bleed through cloth or attack an underlying finish.
Testing and UK roadworthiness
Before final assembly, check radio memory, ignition switching, every speaker, balance and fade, AM/FM and DAB reception, steering controls, illumination and any retained vehicle sounds. Scan for warning messages and verify heaters, switches and vents disturbed during access. Confirm that wiring and the battery are secure.
DVSA's MOT inspection includes visible electrical wiring and battery condition/security, while the visibility section considers the driver's field of view. Mount displays, microphones and glass aerial elements without obscuring the road view or interfering with controls. A successful audio test does not excuse loose wiring, insecure trim or an illuminated safety-system warning.
Common Celsus fitting mistakes
- Buying a fascia from model name alone without checking dashboard generation and aperture.
- Assuming a plug-shaped wiring adaptor retains factory controls or warning sounds.
- Confusing antenna connector gender when viewing the mating face.
- Using a passive conversion on a factory aerial that requires a powered feed.
- Expecting an AM/FM-only aerial or adaptor to provide dependable DAB reception.
- Forcing a Quadlock lever while its inserts or terminals are out of position.
- Routing coaxial cable beside amplifier power wiring or through an airbag path.
- Clipping the fascia permanently before testing all radio and vehicle functions.
Celsus questions and answers
Q: What Celsus products are represented here?
A: Aerials, antenna adaptors, extension leads, fascia panels, wiring leads, release tools and audio installation materials dominate the range.
Q: Is a single-DIN fascia universal?
A: No. DIN describes the radio opening; the outer panel must still match the exact dashboard and vehicle version.
Q: Does matching connector shape prove a wiring lead is correct?
A: It does not; pin functions, data communication, amplification and retained controls must also be supported.
Q: When is a powered antenna adaptor needed?
A: It may be required where the factory aerial amplifier expects a supply through the coaxial connection.
Q: Can one aerial receive AM/FM and DAB?
A: Only where the exact aerial is specified for those bands and connected through the appropriate signal path.
Q: How do I choose between Fakra male and female adaptors?
A: Identify the actual mating interfaces at both ends and read connector gender from the product specification.
Q: Are radio release keys interchangeable?
A: No. Their profile and engagement must suit the locking mechanism used by the original head unit.
Q: Why is there no switched live at a replacement radio plug?
A: Some vehicles communicate ignition state over a data network and need a suitable active interface.
Q: Should excess aerial cable be shortened?
A: Only if the product permits correct re-termination; otherwise route and secure it without tight bends or interference.
Q: Can acoustic cloth be stretched across a speaker cone?
A: It must remain clear of cone travel and should be supported by an appropriate grille or frame.
Q: What should be tested before the fascia is clipped in?
A: Check sound, reception, memory, controls, illumination, warning tones and every vehicle function disturbed during access.
Q: Does car-audio wiring affect an MOT?
A: Visible wiring and battery security are inspected, and modifications must not obstruct the driver's view or create hazards.