1

I bought a Japanese domestic vehicle recently. It has the JBL car audio system. Please send me a link on how to install OSM on it? i’m sure you must have discussed this topic previously.

2

It would be helpful to know whether the car you bought was unbranded (as implied by your use of the non-specific term “a Japanese domestic vehicle”) or has a real make and model, so we can know exactly what navigation system (if any) it has. A “JBL car audio system” sounds like it’s audio only.