AC-T281 Audio Harness for Toyota Display Audio Cars

The AC-T281 is a dedicated harness for those who want to keep Toyota’s original Display Audio while adding aftermarket devices such as DSPs and power amplifiers.

Compatible with 28-pin and 10-pin, and with a length of 1.8 m. It’s easy to use as a base for extracting signals from the factory wiring, making it easier to develop your audio system while keeping as much of the vehicle’s wiring as possible.

“I want to keep the usability of the factory Display Audio, but I also want the sound to have more thickness and information.”
“I want to add a DSP and an amplifier to create sound tailored to the cabin.”

In cases like these, it’s important how you set up the first signal extraction. If this isn’t suited to the vehicle or the added equipment, the wiring may become complicated or you may need to rework it later. The AC-T281 is a harness that makes it easier to organize that starting point for system upgrades.

Because it’s 1.8 m long, it’s easier to route wiring to the aftermarket unit(s), and it also makes it easier to assemble the work if you plan to change specifications or make adjustments later. Although it may look like a small part, it affects how easy wiring is to handle and also the ease of maintenance afterwards.

Also, if you use it in a network mode dedicated to front speakers, you will need additional modified wiring separately. Since the connection method changes depending on the factory audio specifications of the vehicle and the system configuration including the DSP/amplifier, it’s best to confirm based on what you actually plan to build, rather than judging by the harness alone.

At Logon, we don’t just install the AC-T281 on its own—we also organize the wiring and configuration together in a sensible way, considering your current factory system, the equipment you plan to add, and even future system upgrades.

If you’re considering improving sound quality while making use of the factory Display Audio, please consult us after confirming your vehicle model, model year, and current audio specifications. I will help you set everything up from the first harness selection so you won’t run into problems later.

Main Specifications

【Basic Information】
Product name: AC-T281
Product type: Audio harness for Toyota Display Audio vehicles

【Compatibility / Configuration】
Compatible terminals: 28-pin and 10-pin
Harness length: 1.8 m

【Cautions for Use】
When used in a network mode dedicated to front speakers: Additional modified wiring is required separately

• Depending on the vehicle specifications and system configuration, the required connection details may vary.