Model CSD2X2 Drop-In Ceiling Speaker with Back Can 70V & 25V Speaker Systems I FORTHWITH: Electrical Connection 1. Remove cover, install cable clamp (if desired), and feed interconnecting cable into the electrical box. 2. Select speaker loads for desired system type: 70V Red, 25V Yellow, and COM Black for both. Interconnect the speakers in the system, making sure that all leads of the same color are connected together. Avoid swapping colors. 3. Cut bare wire tip off of unused speaker lead.