53-2070-011 Model CSD1X2 Drop-In Ceiling Speaker with Back Can TE 70V & 25V Speaker Systems Subtotal Electrical Connection 1. Remove electrical box cover, then install cable clamp (if desired) and feed interconnecting cable into the electrical box. 2. Sal act speaker leads for desired system type: 70V Red, 25V Yellow, and COM Black for bath. Interconnect the speakers in the system, making sure that all leads of the same color are connected together. Avoid swapping colors. 3.