E46Forum.co.uk • Retrofitting aux input to BMW E46 325i (M54B25) business CD radio

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Retrofitting aux input to BMW E46 325i (M54B25) business CD radio

Posted: Tue Oct 01, 2024 11:41 am

by spinecki

Retrofitting aux input to BMW E46 325i (M54B25) business CD radio

Options for aux input:

BMW OEM aux input adapter
Aftermarket aux input adapter
Direct wiring to radio PCB (advanced)

Installation steps (using OEM adapter):

Remove radio from dashboard
Locate 3-pin port on back of radio
Connect OEM aux adapter (part number: 82110149389)
Route aux cable to desired location (e.g., center console)
Reinstall radio
Activate aux input using diagnostic tool or coding

Additional considerations:

Some radios may require software update for aux functionality
Consider bluetooth adapter for wireless connectivity
Ensure proper grounding to avoid noise issues

Note: The OEM solution is often the most reliable, but aftermarket options can provide additional features like bluetooth.