The following diagram illustrates the wire connection for the heating of both main and wide-angle mirrors for the SKUs listed below:


PBP-35-182C-S Door Mirror Heated and Arm Stainless with Bottom Mount Bracket Aluminum Chrome - Driver and Passenger Side Fit: ( after 2005 Peterbilt ) 335 340 357 382 385 386 325 330 348 388 389 365 367 

PBP-35-182B-S Door Mirror Heated Stainless with Bottom Mount Bracket Aluminum Black - Driver and Passenger Side Fit: ( after 2005 Peterbilt ) 335 340 357 382 385 386 325 330 348 388 389 365 367