Peterbilt Turn Signal Switch Multi-Function Switch | 978-5201 | Heavy Duty Multiple Function Switch | Dorman Products - Aftermarket Auto Parts & OE Solutions Peterbilt 377 378 379 Switch Vehicle model years this part fits:Peterbilt 377: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 Peterbilt 378: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 Peterbilt 379: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 978-5411 1987 - 1998 Peterbilt 377, 378, 379 Console Multi Function Switch | CROSS REFERENCES:1606432, TL10750 Multi Function Switches operate various systems on the vehicle, including lights, turn signals, cruise control and? wiper system Direct replacement - this console multi-function switch is made to match the fit and performance of the original switch on specific vehicle applications Ideal solution - this switch is a reliable replacement for an original part that has failed due to fatigue A direct replacement, Multi Function Switches are an imperative replacement item for safety compliance. Multi-Function Switch | 978-5211 | Multifunction Switch | Dorman Products - Aftermarket Auto Parts & OE Solutions Plug-and-Play for easy installation