This would be helpful if the speaker harness on the vehicle side has a T-type connector for connecting speakers. The speaker side uses M/L size flat terminals, so it is compatible with Clarion and Alpine speakers. It is not compatible with Pioneer and Kenwood speakers. When converting or adding speakers other than the original ones to Suzuki and Daihatsu vehicles, you can connect them to the vehicle side (door) wiring with a one-touch connection. * The color of the coupler, wiring, and terminals may change without notice. How about preparing for the installation of aftermarket speakers? S/M terminals, such as those for Pioneer, are sold separately. ✳️The speaker image is a terminal explanation image (reference image). ✳️It can be connected to other manufacturers' vehicles (Nissan, Mazda, Isuzu, Subaru) if the vehicle connector is a T-type, but it is not compatible with Mitsubishi because the +/- is reversed.