You can wire a car stereo without a harness by directly matching and connecting the wires. However, the factory systems’ colors vary depending on the vehicle model, make, and year. In aftermarket car radios, the accessory wire is usually colored red. Frequently Asked Questions What Color is the Accessory Wire on a Car Radio? These wires send signals to the speakers installed in the F150. Otherwise, the amp will remain on 24×7 and drain the battery. It will send a 12V turn-on trigger to that amp and make it turn on/off in sync with the radio. If you have an aftermarket amplifier installed in your vehicle, you’ll need the amp turn-on wire for that amp to work. The ground wire prevents the radio from any damage in the case of a current overflow. It dims the brightness when you turn on your F150’s headlights.

This wire adjusts the brightness level of the car radio screen in darkness. That’s why it’s also known as accessory wire.

The ignition wire is the one that triggers the radio to turn on – by sending the 12V power signal when the ignition key is in accessory mode. Although it may seem counterproductive (power loss), this constant 12V wire is necessary for the radio to keep track of certain functions, such as current time/date, soundtrack, radio station, etc. Related Read: 6 Reasons Your Ford F150 Radio is Not Working Common Ford F150 Stereo Wires Constant 12V WireĪs its name suggests, this wire provides constant 12V power to the radio – even when the key is in the off position. Source: Ford F150 Radio Wiring Color Codes (2009–2014) Wireįord F150 Radio Wiring Color Codes (2015–2020) Wireįord F150 Radio Wiring Color Codes (2021–Present) Wire Source: Ford F150 Radio Wiring Color Codes (1992–1996) Wire

Ford F150 Radio Wiring Color Codes (1980–1986) Wireįord F150 Radio Wiring Color Codes (1987–1991) Wire Instead, buy a specifically designed wiring harness for your vehicle. You should never cut these wires and make direct connections with the aftermarket radio wires – unless you have a second-hand vehicle and the previous owner has already cut the factory harness. Reminder: This post aims to help you find the correct wires in case of any radio-related problem.

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