Freightliner Forum > location of the end from the "opt" switch cable cascadia 2018 Discussion in ' Freightliner Forum ' started by CoyoteExpress , Dec 23, 2018 .. For the Optional / Spare Switch (OPT) on various Freightliner semi truck models. Up for sale is a usedElectric Connector w/ Wiring. This is a 10-pin connector (4 pins used). There is no part number on the connector.
What Does OPT Mean in a Truck? They say that if you put 4 archaeologists in a room, you get 7 different opinions. That is going to be the case for these three letters when it comes to RVs and trucks.. Freightliner OPT Switch Fuse Location. There is a lot of good news in this section. The fuse is located in the fuse accessory block on top of.. Then you will use a program called Freightliner Service Link and you will program the option switch that you choose to operate that parameter for the beacon light. Then the SAM module will look for the input from the switch to know when to send power out to the beacon light. These are not a simple hook a light up to the switch and off you go.