GTR Lighting

Wiring: Relay & PWM

Relays and canbus modules for installing HID and LED upgrades on any and all modern makes and models.


Wiring: Relay Harnesses, CANBUS Adapters and PWM Integration

Improvements in automobile lighting solutions go hand in hand with better electrical control and efficiency. You can use a variety of control units, CANBUS adapters and relay harnesses to get better efficiency out of your vehicle’s lighting systems. GTR Lighting is proud to offer cutting edge adapters, resistors and relays that will help you optimize your vehicle’s lights. Many vehicles that use HID or LED bulbs use a technology called CANBUS (CAN-BUS) to control and monitor the headlights, tail lights, license plate lights, DRLs, cargo lights, turn signals, fog lights, and/or interior lighting. The CANBUS controls the electricity that is being supplied to different lighting units and bulbs to ensure smooth operations. The CANBUS control unit relies on PWM (Pulse Width Module) that is directly connected to motor controller and tells it how much power to give the motor and in which direction to operate. If you switch to HID or LED bulbs for your vehicle, you will need to have a CANBUS adapter to effectively control the power supply to various bulbs on the vehicle. It can be a challenge to overcome the conversion requirements when swapping out your original bulbs for LED or HID, but we have the parts and support to help you get the job done with ease.

Uses and Benefits of the CANBUS

CAN bus (Control Area Network bus) is a message-based protocol that allows individual systems, devices and controllers within a network to communicate with each other. It was originally developed for automobiles during the eighties but has found usage in other industries as well. In general, a bus is a communication system that transfers data between components. A CAN bus allows for data transfer in a system that is not connected to a network hosting device. CAN bus adapter enables the various lighting components to efficiently and effectively relay information to each other and work in sync. Before CAN bus gained popularity, vehicle wiring harnesses could contain lots of wires, with bundles of 8 or more wires to carry signals between interconnected systems. In contrast, CAN bus utilizes a high-speed (25kbps – 1Mbps) twisted pair wiring system that significantly reduces the length of wire necessary to allow system components to effectively communicate.

Integrated CAN bus / PWM communication offer a variety of benefits for motor vehicles.

Speed – The main benefit of CAN bus is that the data transfer speed far outstrips traditional analog wiring harnesses. CAN bus data relays allow multiple messages to be sent simultaneously to all connected devices, light sensors or adaptors for faster communication. Flexibility – CAN bus offers a dual-wire structure that allows better maintenance flexibility. CAN bus systems require significantly less wire making them easier to install in vehicles. You can also add new components to a CAN system without putting in lots of wires which significantly reduces complications and solves signal problems. Reliability – CAN bus systems are sturdier and less sensitive to magnetic interference than analog wiring. Since CAN bus wiring requires fewer cables and connectors, it cuts down points of failure and offers more reliable signal transfer between vehicle components. Cost – Since you need fewer wires or hardware, CAN bus adapters are an ideal solution for embedded applications that require multi-processor communication on a budget.

CANBUS Adapters, Relay Wires and PWM Interface Modules at GTR Lighting

GTR Lighting offers a complete range of adapters, resistors, relay harnesses and PWM interface modules that will help you install better lighting systems on your vehicle. For CANBUS/PWM Integration, we offer electrolytic capacitors in 2200UF 25v and 4700UF 35v styles. We also offer interface modules for 9005 / 9006 / 9007 / H1 / H4 / H7 / H8 / H9 / H11 / H13 / 5202 and 2504 style bulbs. If you are looking for relay harnesses and extension wiring you can find the 25w, 35w and 55w gold style resistors for customized installation. You can install these resistors for 9004 / 9005 / 9006 / 9007 / H1 / H3 / H4 / H7 / H8 / H9 / H11 / H13 / D2S and 880 style bulbs. All our relay harnesses, wires, resistors, adapters and PWM integration equipment is manufactured with top quality materials and tested for reliability. All our products are very easy to install and come with complete instructions to make your customized retrofit project a success. Individual wires, resistors and PWM interface module connectors are generally purchased by experienced users who know what they are doing and want to get the best bang for their buck. If you are new to aftermarket customization, we suggest going with a conversion kit as it would make your job easier. On the other hand, if you want to take things to the next level and know what’s involved in a customized upgrade, purchasing individual resistors and connectors could save you a lot of money. You can also get in touch with our support team who can help you find the right adapters and resistors for your needs. Need guidance for the best HID resistors, PWM connectors and relay wires for your vehicle? Got a tech question? Wholesale inquiry? Contact us today!