RS232 pinouts and wiring - AirBorn Electronics Connecting together two serial devices involves connecting the Rx of one device to the Tx of the other, and vice versa. The diagram below indicates how you would go about connecting two PC's together, without handshaking. How To Wire Lights in Series? Basic Electrical Wiring How to Connect Lights Points in Series? In today basic electrical wiring installation tutorial, we will show how to wire lighting points in sires?ough, we know that series connection for household wiring like fans, switches, light bulbs etc is not a preferred way instead of parallel or series-parallel wiring.