All TELE System Wireless products are supplied with two SPECIFIC SCART-RCA cables (the leads with three jacks: yellow, red and white): one has to be connected to the transmitter and the other to the receiver of the Wireless. These cables are identified by a label either on the SCART input or attached to the actual cable. The label indicates which RCA plugs have to be connected to the receiver or the transmitter. If they are inverted nothing will be seen on the second television.