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English and Polish versions are available directly. Other translations can be found in each product’s expandable language list.
Lights Sender 1-mini
Installation manual for the 7-pin module without a parking-sensor cut-off function.
Other languages (8)Lights Sender 1
Complete 7-pin module manual covering MULTIPLEX/PWM, LED trailer lights and the PDC control output.
Other languages (16)Lights Sender 2
13-pin module manual covering the reversing light, PDC control, MULTIPLEX/PWM and LED trailer lights.
Other languages (5)TCBM-Sender
Installation manual for the automatic trailer-battery charging control module.
Other languages (3)Four essential installation rules
Professional installer guides
Parking-sensor control
The pink Lights Sender wire is a low-side switched ground output rated at a maximum of 1.5 A. Interrupt only the ground supply to a compatible PDC control unit — never the +12 V supply, CAN-H or CAN-L — and provide its ground through the module.
This function is intended mainly for analogue, aftermarket PDC systems. Factory CAN-bus parking systems may not be compatible.
Open the PDC guide
MULTIPLEX / PWM
In many vehicles, one lamp wire carries two functions, such as the tail light and brake light. Lights Sender can read this type of control when the relevant high-impedance inputs are connected in accordance with the product diagram.
Guidance for selected vehiclesIf the tail-light and brake-light signals cannot be separated reliably, the tail-light input may — after checking the vehicle wiring — be taken from the number-plate light and the brake input from the high-mounted third brake light.
Details and option for VE/BMW group - here
Option for LED trailer lights
The module detects a connected trailer by monitoring the load on the trailer turn-indicator outputs: 1/L and 4/R. With LED trailer lights, a modification on the trailer side may be required in some cases to ensure reliable detection.
Installing quick-splice connectors
Insert each wire fully into the correct channel, then press the metal contact down evenly using suitable pliers. Secure the finished connection against movement and moisture.
Automatic rear-light changeover
On vehicles that switch between tailgate-mounted and body-mounted lamps when the tailgate opens, obtain the signal from both lamp sets and isolate the circuits correctly. The connection method must suit the specific vehicle wiring.
ATTENTION: Final compatibility must always be assessed from the electrical system of the individual vehicle. Open the PL/EN application guide
Trailer-socket pin functions
Pin numbers define the socket functions. Always verify cable colours in the instructions supplied with the relevant harness — never base an installation on wire colour alone.
Quick diagnostics
| Symptom | What to check | Most likely cause |
|---|---|---|
| No response with an LED tester | Repeat the test using two 21 W bulb loads or a working trailer | Insufficient load on the L/R outputs |
| LED trailer is not detected | The load on turn-indicator outputs 1/L and 4/R | LED lamp current is below the trailer-detection threshold |
| None of the trailer lights works | Fuse, permanent +12 V supply and the white ground wire | No power supply or ground connection |
| Lights operate intermittently | Earth point, quick splices and harness stability | Poor contact or movement of the wiring |
| PDC does not switch off | The interrupted ground supply and the pink wire connection | Wrong conductor interrupted or a factory CAN-bus PDC system |
| No reversing light through the 13-pin socket | The module REV input and socket pin 8 | Missing input signal or incorrect connection |
| Incorrect tail/brake-light operation | Whether the vehicle uses a shared MULTIPLEX/PWM signal | Incorrect assignment of the 58/54 inputs |
Still need assistance?
Contact us and include the vehicle model, year of manufacture, module type and a clear description of the symptom.
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