Model: SLI4.2
from $149.99
The Connection SLI 4.2 is a high-to-low level conversion interface designed for seamless OEM audio system integration. This black interface features four input channels with a 200 Ohm impedance and four output channels with a 400 Ohm impedance, ensuring balanced signal conversion. With a broad frequency response of 15-40kHz, it accurately converts high-level speaker signals from factory head units into clean, low-level RCA signals, making it ideal for adding aftermarket amplifiers to existing OEM audio systems.
A vehicle-specific harness is mandatory to avoid cutting factory wires. Modern cars require 'smart' interface modules to retain steering wheel controls and warning chimes. Available from $149.99.
Wiring harnesses have zero ongoing costs. Once installed correctly, they last the lifetime of the vehicle unless damaged by pests or physical modification.
Common Failure Modes
Failure is almost always due to poor installation, such as loose crimps or exposed wires shorting out. Vibration over time can cause poorly routed wires to chafe.
A vehicle-specific harness is mandatory to avoid cutting factory wires. Modern cars require 'smart' interface modules to retain steering wheel controls and warning chimes.
Wiring harnesses last the life of the vehicle unless damaged by pests, heat, or modification.
The Connection SLI 4.2 High To Low Level Conversion Interface For OEM-Integration is available at abt, starting at $149.99.
Wiring harnesses have zero ongoing costs. Once installed correctly, they last the lifetime of the vehicle unless damaged by pests or physical modification.
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