On the switch itself.
Need to know the model. Big difference between changing one on, say, a 387 and a 389.
On a 389 Peterbilt, the dash light fuse box is typically located behind the dashboard, accessible from the driver's side. You may need to remove a panel or cover to reach it. Additionally, a secondary fuse box may be found under the hood or near the battery, depending on the specific configuration of the truck. Always refer to the owner's manual for precise locations and diagrams.
It's the regular clutch position switch at the top of the pedal... the "safe start" feature is a matter of programming in the engine ECM.
Peterbilt makes Class 5 through Class 8 trucks, and the weight varies greatly between these models. Additionally, the application affects the weight - say, for example, you have a Peterbilt 330. Whether it's a single or tandem axle, what type of body it is, etc. will affect the tare weight. For a tractor unit (such as the 379, 389, 378, 359, etc.), you can expect a tare weight between 16,000 and 20,000, depending on the configuration.
A Peterbilt 389? If you really have to ask this question on here, you're nowhere near ready to take this task on. Not sure about the 389, but in a lot of vehicles, you can do this job in-frame by dropping the transmission and accessing the rear bearing that way. But I would really advise you to get a professional on this, especially if you don't have a heavy duty transmission jack, impact wrenches and sockets, and other hand tools, as well as an air source.
10 percent of 389 = 38.910% of 389= 10% *389= 10%/100% *389= 389/10 or 38.9
7 x 389 = 2723 389 + 389 + 389 + 389 + 389 + 389 + 389 = 2723
389 = 1 x 389 (389 is a prime number).
1 x 389, 389 x 1.
389 is a prime number. The only factors are 1 and 389 only.
389 is a prime number.
1 and 389.