INPUT ARTICLE: Article: Every head unit, center console, and removal process is different depending on your vehicle’s make and model. Consult your instruction manual to see how you’re supposed to disassemble your dashboard to access your factory head unit. Typically, you’ll use prying tools to pop the covers off after unscrewing the knobs and screws on your center console. Once your factory head unit is exposed, slide it out or unscrew it before pressing the release clip to pop the wire harness off.  The head unit refers to the box where your radio dials and volume controls are. The wire harness is the small set of slots that bring all of your individual wires into the right slots on your head unit. Set any knobs or screws aside in a safe place so that you don’t lose them when it comes time to rebuild your dashboard. You usually start on the bottom of the dashboard where your cup holders or stick shift are. Depending on your audio system, you will either be connecting a new head unit to the old wire harness or attaching a new wire harness to your preexisting wire harness. Either slide your new head unit directly into the wire harness while matching the corresponding colors together or use wire strippers to expose the wires on each corresponding pair and twist the exposed part to tighten it. Slide each set of exposed wires into a butt connector and use a crimp tool to set the wire in place.  This process depends entirely on your vehicle’s make and model as well as your audio wiring kit’s instructions. Use a zip tie to tighten bundles of cords together and make things easier. Cap any exposed wires with small pig tails by trimming them with wire cutters. Twist the pig tail on top of the exposed wire until it catches. A subwoofer and an amp run on a different voltage than your speakers and head unit. To compensate, connect a line out converter to your head unit by connecting the right channel and left channel in the line converter to the right channel and the left channel in the head unit with RCA cables. Connect the other cables as stated in your instruction manual for the audio system.  Some single-din head units come with a slot for a line converter directly underneath it. You probably need to use RCA cables to connect the head unit to the line out converter. You may need to plug a cable into the output port on the head unit and run it into the input port on the line out converter. Your line out converter comes with a blue connection cable. This cable relays information from your line out converter to your amplifier. Run the cable to your amp by either hiding it under your floor mats or running it under the plastic panels between the doors and seats on the driver’s side.  Hide the cable under the cases between the doors and seats or simply slide it under the floor mats. Leave the blue cord next to the red power cord.

SUMMARY: Disassemble your center console to remove the factory head unit. Match the colors for each wire together on the new head unit. Connect your line out converter to the head unit. Run the blue cable to the amp on the opposite side of the vehicle.

INPUT ARTICLE: Article: There are federal physical qualifications you have to meet before you can get your CDL license. You must be 21 years of age to drive a semi used for interstate commerce, but you may received a restricted license at age 18 that limits your use of the vehicle to one state. In addition, you must undergo a federal medical test and obtain a federal medical card before applying for your CDL. To get a Commercial Driver's License (CDL) you must pass a series of written knowledge tests. The tests you take are determined by what type of vehicle you wish to drive, and what you will be carrying in your truck.  The General Knowledge Test is taken by all applicants, no matter what type of vehicle they will be driving.  The Air Brakes Test must be taken if you wish to drive a truck with air brakes.  The Combination Vehicles Test has to be taken if you want to drive tractor-trailer combinations.  The Hazardous Materials Test is required if you will be transporting hazardous materials.  The Tanker Test is required for hauling liquids in a tanker truck.  The Doubles/Triples Test is required if you want to pull two or three trailers at a time. After you pass the knowledge tests, you get a permit - similar to the one you'd get before you're licensed to drive a car - which you can use to practice for the remaining exams you'll need to take to get your CDL for up to 6 months. As with a regular driver's permit, you'll need to have an instructor with a CDL license with you at all times. To get a permit, you must:  be at least 18 years of age. have a valid driver's license. pass the knowledge tests. have a federal medical card. After getting a passing score on the knowledge tests, you can move on to the skills tests, which will draw on the hours of practice you underwent during training. In some cases you can rent a semi truck from your training program and take it to the DMV for the skills test. You'll be tested on the following skills, in addition to others that may be related to the specific type of vehicle you will be driving:   Pre-trip vehicle inspection - This mandatory tests determines whether you understand how to check to make sure your vehicle is safe to drive. You'll perform a check in front of the examiner.  Basic vehicle control - For this test you'll get inside the vehicle and operate it in front of the examiner. You'll be asked to move it forward, backward, and to make turns without veering too far from your lane or hitting cones or barriers.  On-road driving - For this test you'll be asked to drive your vehicle on the road through a variety of traffic situations. You'll make turns, move through railroad crossings, shift to go up and down grades, and navigate city streets and highways. Once you have your CDL, you can start applying for jobs with trucking companies or operate as an independent agent. If you want to start driving a different type of truck, you may have to take additional exams.

SUMMARY:
Meet the physical qualifications. Pass the the knowledge tests. Get an instruction permit. Pass the skills tests. Use your license to land a job.