Kenwood XR-1S Owner's Manual (pdf) - Page 6

Connection WARNING Remove the ignition key and disconnect the negative · terminal of the battery to prevent short circuits. CENTER UNIT (CD receiver, etc.) * Commercially available parts RCA cable* Power control wire* Left input Hexagon Wrench (Small) FUSE [30Ax2] BATT. GND P.CON Hexagon Wrench (Large) Use the attached Hexagon Wrench. SPEAKER OUTPUT REMOTE LINE IN LINE OUT L R Hexagon Wrench (Small) Right input Use the attached Hexagon Wrench. Protective Fuse* Battery wire* Subwoofer (L + R) Terminal cover Battery Ground wire* WARNING • To prevent fire caused by a short in the wiring, connect a fusible link or breaker nearby the battery's positive terminal. When two subwoofers are connected. Dual voice coil subwoofer SPEAKER OUTPUT (4Ω + 4Ω) SPEAKER OUTPUT (2Ω + 2Ω)  English