Adding an auxiliary driving lamp can improve forward visibility when driving at night, on poorly lit roads, or in challenging weather conditions. The Hella Comet 500 Driving Lamp – Yellow Spot Light is designed as an auxiliary lighting solution that can be mounted to a suitable location on a vehicle and connected to the vehicle's electrical system.
In this guide, we explain the basic installation process, including mounting the lamp, connecting the wiring, installing a relay and switch, and correctly aiming the light.
Before starting the installation, prepare the following tools and components:
Hella Comet 500 Yellow Spot Driving Lamp
Suitable mounting bracket and hardware
Automotive relay
Inline fuse or suitable fuse holder
Automotive-grade electrical wire
On/off switch
Wire connectors or terminals
Cable ties
Screwdrivers
Spanners or socket set
Wire stripper/crimper
Electrical tape or heat-shrink tubing
Multimeter or test light
Always verify the lamp's electrical specifications and your vehicle's voltage system before installation.
Select a strong and secure location at the front of the vehicle where the lamp has a clear forward-facing view.
The mounting position should:
Provide a stable fixing point.
Keep the lamp securely attached during driving.
Avoid blocking the vehicle's existing headlights, grille, radiator airflow, or other important components.
Keep the lamp and wiring away from hot engine components and moving parts.
Allow enough space to adjust the lamp after installation.
Mark the mounting holes before drilling or fastening the bracket.
Position the Hella Comet 500 on the selected bracket or mounting point.
Secure the lamp using the appropriate bolts, washers, and nuts. Tighten the hardware firmly, but avoid excessive force that could damage the lamp or mounting surface.
Make sure the lamp is facing forward and remains accessible for future adjustment or maintenance.
A proper wiring arrangement helps protect the vehicle's electrical system and provides reliable operation.
A typical auxiliary-lamp circuit consists of:
Battery Positive → Fuse → Relay → Driving Lamp → Ground
The relay is controlled by a separate switch or by a suitable existing lighting circuit, depending on the vehicle and the intended installation.
Install an appropriately rated fuse close to the battery's positive terminal.
The fuse provides protection against excessive current caused by a short circuit or wiring fault.
Do not install a fuse with a rating that is higher than appropriate for the lamp and wiring. If you are unsure of the correct rating, check the lamp specifications or consult a qualified automotive electrician.
Install the automotive relay in a protected location within the engine compartment.
Connect the relay according to the relay manufacturer's terminal markings and wiring diagram. Typical automotive relays use terminals for battery power, lamp output, ground, and the control circuit.
Use properly crimped terminals and make sure every connection is secure.
Run the positive wire from the relay output to the Hella Comet 500 driving lamp.
Connect the lamp's negative wire to a suitable vehicle ground point or the appropriate ground connection specified for the lamp.
Keep the wiring neatly routed and secure it with cable ties. Avoid routing wires near exhaust components, belts, fans, pulleys, or other moving parts.
Install the auxiliary-light switch in a convenient location inside the vehicle.
Connect the switch to the relay's control circuit according to the relay wiring diagram.
The switch should be easy for the driver to operate without interfering with normal vehicle controls.
If you want the auxiliary lamp to operate only under specific headlight conditions, the relay control circuit can be configured accordingly. Follow the vehicle's wiring requirements and applicable regulations.
Before switching on the lamp, inspect the complete installation.
Check that:
The mounting hardware is tight.
The lamp is securely positioned.
The fuse is correctly installed.
Relay connections are secure.
Ground connections are clean and tight.
Wires are protected from heat and moving components.
No bare wires are exposed.
The switch operates correctly.
Using a multimeter can help verify voltage and identify wiring problems before the lamp is switched on.
Turn on the auxiliary-light switch and check that the lamp illuminates correctly.
Observe the lamp from a safe position and verify that the wiring, relay, and fuse remain normal during operation.
If the lamp does not illuminate, switch the system off and check the fuse, ground connection, relay connections, switch wiring, and power supply.
Correct alignment is an important part of installation.
Park the vehicle on level ground facing a suitable wall or flat surface. Turn on the lamp and adjust its position so that the beam provides useful forward illumination without unnecessarily shining into the eyes of other road users.
After adjustment, tighten the mounting hardware and recheck the alignment.
Always disconnect the battery or isolate the relevant electrical circuit before making wiring changes.
Use appropriately sized automotive wiring, suitable connectors, proper insulation, and a correctly rated fuse. Keep electrical connections protected from water, dirt, vibration, and excessive heat.
Do not aim auxiliary driving lights in a way that can dazzle oncoming traffic. Also check your local vehicle lighting regulations before using auxiliary lamps on public roads.
If you are unfamiliar with automotive electrical systems, professional installation by a qualified technician is recommended.
A correctly installed driving lamp provides more than just improved illumination. Proper mounting reduces vibration, correct wiring helps protect the vehicle's electrical system, and accurate beam alignment makes the auxiliary light more useful while reducing the risk of glare for other road users.
The Hella Comet 500 Yellow Spot Driving Lamp can be a practical addition to vehicles that require additional forward lighting for suitable driving conditions.
Installing a Hella Comet 500 Yellow Spot Driving Lamp involves four important areas: secure mounting, protected wiring, reliable relay and fuse connections, and correct beam alignment.
Taking the time to install the lamp carefully can help ensure dependable operation and long-term performance. Always follow the lamp manufacturer's specifications, vehicle wiring requirements, and applicable local regulations.
Looking for quality automotive lighting and vehicle accessories? Visit StellerGear.com to explore a range of automotive parts and accessories for your vehicle.
