| 摘要 |
<p>Disclosed is an interfacing connector to allow use of a control system with an external signal source which can be either a switched "hot" or a switched ground. Both such signal sources are found in certain applications, particularly in motor vehicles. The connector consists of a first plug associated with the control system and a second plug associated with the switched signal lead. The first plug includes two sets of three terminals per set, one for use with a switched "hot" signal and one for use with a switched ground signal, The second plug includes three terminals adapted for connection to either of the two sets of terminals. A relay or other control element is connected to the first plug and associated with the control circuit. Signal input and interconnection means are provided whereby the second plug is operatively connected with the control element upon insertion in the correct one of the sets of terminals on said first plug. The device will not give false signals if an incorrect connection is made. In a preferred mode the plugs are so sized and configured as to prevent the most common types of incorrect connection.</p> |
