Slide the negative terminal back onto the port on the battery and push it down as far as you can. Tighten the nut with a socket wrench to secure the terminal back to the battery so you're able to use your vehicle again. Turn the key in the ignition to start your vehicle and check if the power light turns on for the amp. If you don't see the power light turn on, shut off your vehicle and disconnect the negative terminal before checking all of the power connections. Look for a knob or screw that's labeled "Gain" or "Amp Sensitivity" on the front of your amp. If there's a knob, turn it counterclockwise by hand to lower the gain. If there's a screw, turn it counterclockwise with a screwdriver until it doesn't go any further. The gain controls how loud the amp will output the audio from your stereo. Put a CD in the stereo or connect an MP3 device so you can play music. Choose a song that you know well and has crisp, clear audio so you can hear distortion easily. Keep the song on repeat so you can continue listening for audio interference. You can also use the radio, but make sure the station comes in without any static, or else it can be hard to tell if it's caused by the amp. Turn the volume knob slowly on the stereo to increase the volume. Keep turning the dial until you hear static or interference coming through your speakers. Find the volume level right below where the distortion starts so you can adjust your vehicle's audio accordingly. You won't hear the music start playing yet since the speakers run through the amp and the gain is turned down. Rotate the gain control clockwise by hand or with a screwdriver so you can hear the audio through your speakers. Continue raising the gain setting until you have the audio as loud as you think you'll play it in your vehicle. If you hear any distortion or interference, turn the gain down slightly until you don't hear it anymore. Once you're happy with the gain levels, turn the volume down at your stereo. Whenever you want to make volume adjustments after setting the gain, you can use the knob on the stereo head. Push the wires for the stereo head back into the hole and position it so the mounting holes line up with the dashboard. Screw the stereo into the dashboard so it's secure. Line up the trim panels around the stereo and on the sides of your vehicle and push them in until they snap into place. Keep attaching the rest of the trim pieces to finish the installation.
++++++++++
One-sentence summary -- Reconnect the negative battery terminal to test the amplifier. Turn the gain on the amp down as far as it can go. Play clean audio that you're familiar with through your stereo. Raise the volume on the stereo head until you hear distortion. Set the gain controls until the music is as loud as you plan on listening to it. Reattach the trim pieces and stereo head when you're finished.

Practice active listening by maintaining eye contact with the person speaking and nodding your head. Respond thoughtfully to what they said to show that you respect and care for them. Be more outgoing by striking up conversations with people you meet and showing genuine interest in what they're saying. Film producers have to interact with crew members, actors, and studios, so it's important to maintain open communication with others. Introduce yourself to new people and talk with them to help you practice your skills. Try collaborating with other people on projects or short films so you can get used to communicating clearly so you can all meet an end goal. Write schedules and plan ahead of time so you don't get overwhelmed with what you need to complete. Make to-do lists and prioritize the most important tasks so they get done in a timely fashion. Try to group tasks that are similar to one another and complete them at the same time so you can maintain focus. Film producers have many roles behind the scenes of a movie, and may work on multiple films at the same time. Do your best to avoid distractions since they can slow you down and get in the way of important tasks. Producers also need to delegate their duties to assistants and crew members, so accept that you can't do everything by yourself. Set end goals that you hope to get out of the negotiation so you know the minimum amount you'll accept. Communicate clearly with the other person to tell them what you need and listen intently to them to understand what they're able to provide. If they can't meet your terms exactly, ask them if there's any way to compromise to show that you're flexible and willing to work with them. Film producers need to work with a lot of financials, so negotiating with crew members and studios for the best rates is an important factor. Don't be afraid to turn an offer down if you aren't able to reach terms that work for you. Negotiation takes a lot of practice, so you may make mistakes with the first few deals you make. If you're able, hire a negotiation coach to help you. Coaches will act as a person you need to negotiate with so you can practice your skills. Mentally work through the pros and cons of the choices you could make for each decision you need to make. Avoid letting your emotions or ego get in the way of your decision since you may not make the best choice if you do. Choose the option that's the most beneficial and makes the most sense for the task that you need to complete. Producers are often asked a lot of pertinent questions that need to be answered in a fast and fair manner to stay on schedule. Don't make decisions impulsively without thinking over the options first. Ask other people for their input on a decision to help you get an outside perspective on your choice. Stay up to date with movie-related news through websites or entertainment magazines to see what's currently in production. Check out what movies are coming out soon and watch as many as you're able to. Write down genres that are popular and what movies are doing well at the box office. Keep a list of movies that you like and are similar to projects that you want to work on. Producers need to know what types of movies are successful and popular so they can find new films to produce next. Watch behind-the-scenes features on films you like to learn more about what goes into their production. Work with friends or other people in the industry to write, shoot, and edit the short film to a final product. If you have a budget, base each of your decisions on what's the most cost-efficient so you don't overspend. When you're finished with the short, upload it online or submit it to film festivals to share it. Making your own short films helps you learn the process of producing a film from start to finish. Make sure you can easily shoot the film yourself. For example, it can be difficult to make something that relies on a lot of special effects since it can cost a lot of money. If you don't have an idea for a short film, ask friends or students in nearby film programs to see if you can help them with their projects.
++++++++++
One-sentence summary --
Develop your interpersonal skills so you can collaborate with others. Practice multitasking to learn how to balance your duties. Work on your negotiation skills so you can get the best deals. Learn how to make decisions quickly and diplomatically. Watch movies frequently to find out what projects are getting made. Create your own short films to understand what goes into production.