Hook up ground or power first

Discussion in ' General Electronics Chat ' started by suprageezer , May 26, Load More Articles. All About Circuits. Better to Switch Ground or Power?

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Correctly installing an amplifier is not particularly easy, but it is an important part of getting a quality sound and avoiding technical mishaps. Installing an amp can be done without the help of a professional, allowing you to get great sound without an installation fee. To create this article, 13 people, some anonymous, worked to edit and improve it over time. This article has also been viewed , times.

Car Speakers Electronic Amplifiers. Learn more. Learn more Mount your amplifier on a solid surface that will not conduct electricity. In other words, do not mount it on a metal surface. Disconnect the negative battery terminal. Make sure you know how to reactivate your radio before doing this, if your radio has a security system. Pass the power wire through the firewall. You can put it through an empty rubber grommet in a factory hole.

If there is no available hole, use a power drill and steel bits to drill one. Start with a pilot hole and then work your way up to a size that will fit your wire. Paint the hole's edges to protect against rust. Put a rubber grommet in the hole to keep the wire from chaffing. Run the power wire to the battery. Start from the interior of the car, and make sure the wire won't get pinched or caught on anything.

Run the wire under the carpet by removing the rocker panel and kick panel covers. Install an inline fuse holder for the power line 18 inches 46 cm or fewer from the battery terminal connection. It is best to install it as close as possible to the connection. Consult the owner's manual or the manufacturer of your amplifier to determine the size fuse you should use. Run your RCA cables and remote turn-on lead remote turn on lead is the blue wire with white line from the back of the head unit to the amp.

Snake them through the car in the same way you did the power wire, but do it on the opposite side of the vehicle. This will prevent noise in the system. Connect the speaker wires from the amplifier to the speakers. Situate these wires away from the power wires. Connect the amp's negative terminal to the car's chassis ground.

Use a short negative power wire that is the same diameter as the positive wire that leads to the battery. Insert the main power wire fuse once all the connections for the other wires are in place. Set all of the input level gain controls to their lowest setting. Set equalizers to their center, or neutral, position if you have them. Put in a CD with music that you are familiar with. Choose something strong and clean sounding. Turn up the deck's volume until you hear distortion, and set it just below that level.

If you don't hear distortion even at the loudest setting, the head unit is in good shape. Repeat this process for the input gain, and then with all the other components. While your key and radio is on, disconnect and connect the remote wire to the amp. Yes No. Not Helpful 2 Helpful 9. David Riggs. The balance on your radio may have gotten moved from center to right or left, or your speaker wire may have come disconnected.

Check your balance first on your radio's settings. If that's not it, trace your wires to make sure they are connected. If they are, then hook up an external speaker to the radio's output for that side to see if it is the radio at fault. If the radio is good, it could be a bad speaker. Not Helpful 3 Helpful 8. You probably have it connected to a full time 12 volt power source, you need to connect it to a source that is only powered when the key is in the on or accessory position.

Not Helpful 0 Helpful 2. This is called "line input. Connect the wires just like you would to your speakers. Not Helpful 4 Helpful 6. If you have a factory deck and install an amp, there's really no wire to connect the amp to on the factory deck. What you could do instead is locate your fuse box and find a fuse that turns on when you turn the key in your car. Take that fuse out, wrap the remote wire around it, and connect it back where it was.

Once you've reconnected it, turn the vehicle on and check to see if your amp turned on. If it does, then turn your car off and make sure the amp turns off as well so it doesn't drain your battery. Not Helpful 2 Helpful 1. Lewis Heath. It can be connected to the negative battery side or somewhere metal in the car. Not Helpful 0 Helpful 0. The only time you should see a voltage reading is if you're measuring from a battery positive source and ground.

Generally, the positive wire will be red and the negative will be black. However, if you're asking about the wires from the vehicle, it will depend on the manufacturer. If that's the case, find a good service manual with schematics. The speakers attached to the amp are making a thumping sound like "pop pop," like it's picking up current draining.

What do I do? If the sound increases with the increase in engine RPM then reduce gain of the amp to resolve the issue. Make sure the control wire from your deck to the amp is connected. Consult the schematic for your deck to be sure which wire this is. Unanswered Questions. What is the difference between low and high level wiring on an amp? Answer this question Flag as Flag as How do I tell what type of amplifier I have?

The amplifier I have has been painted how do I know where power and speakers plug into amplifier? How do I know if my fuse is blown or if my amp is wired incorrectly? Include your email address to get a message when this question is answered. Already answered Not a question Bad question Other. Warnings Never drill inside a car's parts unless you know exactly where the drill bit is going. Do not attempt to install an amp if you do not feel comfortable with the procedure.

Wear hearing protection when adjusting the amp's settings. Things You'll Need Amplifier. Edit Related wikiHows. References http: Car Speakers Electronic Amplifiers In other languages: Is this article up to date? Cookies make wikiHow better. By continuing to use our site, you agree to our cookie policy. About This Article. March 29, Related Articles. Can you tell us which parts were out of date so we can update them?

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The reason I would connect the positive cable first (in a pole first: Only a small part of the car is now connected to power. Ground goes first. Ground Or Power First - when connecting power is it ground 1st or power then ground?.

Correctly installing an amplifier is not particularly easy, but it is an important part of getting a quality sound and avoiding technical mishaps. Installing an amp can be done without the help of a professional, allowing you to get great sound without an installation fee. To create this article, 13 people, some anonymous, worked to edit and improve it over time.

If you are looking to get an off-grid lifestyle without the off-grid price, an alternator battery connection might be the best option for you.

Wiring in one amplifier can be complicated enough, especially when you're dealing with a factory car stereo, and the situation just gets more complex when you add multiple amplifiers to the equation. You can wire two amplifiers, or even multiple amps, in one car audio system, but it takes some extra planning.

Can You Wire in Multiple Amps, or Are Are You Limited to Just One?

I am curious to which battery terminal should I take off first, positive or negative? When changing a battery I have always taken off the positive first followed by the negative, but when helping a neighbor with his car yesterday, he took off the negative cable to cut power to the electronics. Any ideas which one to take off first? Does it even matter? Thanks for your input.

Car Battery Do's and Don'ts

A friend of mine told me that I should always disconnect the positive terminal of the battery first to keep the electricity from spilling out of the battery. I can't see how this would matter. I just unhook whichever terminal is closest first. I've never noticed any spilled electricity, and I think he's just pulling my leg. Let me relate something that happened to a friend of mine, a dentist by trade who likes to work on his sports car occasionally. In preparation for some other work, he elected to remove the battery from the car, using a box wrench to loosen the battery clamps. The wrench made contact with his wedding ring he's lefthanded , and the ring in turn made contact with the battery holddown. A massive short circuit welded his ring to the holddown and to the wrench, which in turn was welded to the positive terminal.

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Battery Wiring. Trunk Mounted Battery Installation.

How to Connect Your Battery and Alternator

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Better to Switch Ground or Power?

Chat or rant, adult content, spam, insulting other members, show more. Harm to minors, violence or threats, harassment or privacy invasion, impersonation or misrepresentation, fraud or phishing, show more. Yahoo Answers. When hooking up subs and amp should i connect the ground the ground first or hook up power cable to battery? Report Abuse. Are you sure you want to delete this answer?

The 3 Rules, The Humble Circuit, and Its Place in Our World of Electronics

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. When reconnecting a battery, why is it recommended to connect the positive lead first, and the negative lead last? What difference does it make if they are connected in the opposite order? This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. The reason I would connect the positive cable first in a negatively-earthed car is that while tightening the positive connector with a spanner wrench , if I were to touch the body of the car with the spanner at the same time, nothing would happen and I would be OK. However if the negative was already connected to the battery and I shorted the positive to the body with the spanner, there would now be a short circuit with a big spark and a possible fire.

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Скажи, что ничего нет, - прошептал.  - Абсолютно. Скажи папе, что все в порядке. Но нутром он чувствовал, что это далеко не. Интуиция подсказывала ему, что в глубинах дешифровального чудовища происходит что-то необычное. ГЛАВА 10 - Энсей Танкадо мертв? - Сьюзан почувствовала подступившую к горлу тошноту.

Одно движение, и он выстрелит. Но стрелять не понадобилось. Халохот был мертв. Беккер отшвырнул пистолет и без сил опустился на ступеньку. Впервые за целую вечность он почувствовал, что глаза его застилают слезы, и зажмурился, прогоняя влажную пелену.

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