What Does Rem Mean On An Amplifier

by Matthew David | Updated: 09/14/2023

What Does Rem Mean On An Amplifier

Have you ever opened up your car stereo and seen a mysterious wire labeled “REM”? If you’re installing an aftermarket car amplifier, figuring out what the REM wire does is crucial – but what exactly is it for? Don’t worry, I’ll walk you through everything you need to know about the REM wire so you can hook up your amp like a pro.

A Quick Intro to the REM Wire

The REM wire, also called the remote turn-on wire, is how your amplifier knows when to turn on and off. It connects your amp to your car’s ignition system so that when you turn on your car stereo, it sends a signal to your amp to turn on too.

Without the REM wire, you’d have to reach back and manually turn your amplifier on every time you wanted to listen to music. No thanks! So the REM wire is an essential ingredient in getting flawless amp integration.

Throughout this article, I’ll cover all the ins and outs of the REM wire so you can conquer even the trickiest amp install. Let’s get started!

What Is the REM Wire Exactly?

REM stands for “remote turn-on.” It’s a standard wire that comes with aftermarket amplifiers.

The Fundamentals

So in a nutshell, the REM wire is the conduit that lets your head unit tell your amp when to power up and start pumping out those sweet beats!

Why Do You Need A REM Wire?

You’re probably wondering why you need this REM wire instead of just wiring the amp directly to constant power.

Good question! There are a few key reasons the REM wire is important:

So in short, the REM wire is your friend! It makes installing an amp much simpler and prevents a lot of potential issues.

Where Can You Find the REM Wire?

In your amp wiring kit, you’ll notice a wire labeled just for REM or remote turn-on. It’s usually colored blue or blue with a white stripe.

On the amplifier itself, you can find where to connect the REM wire on the rear panel. It will be labeled “REM” or “remote” and located near the power and ground terminals.

The best place to hook up the other end of the REM wire is to an ignition-switched power source, like your stereo’s remote turn-on wire or a fuse box connector. This links the amp to turn on and off with your car’s electrical system.

So look for that blue REM wire and get ready to remote start rockin’!

How Do You Connect the REM Wire?

Connecting the REM wire is a crucial step in your amp installation. There are a couple options for hooking it up:

Connect to an Aftermarket Head Unit

If you have an aftermarket stereo installed:

This links the amp power to your stereo’s power for seamless turning on and off.

Connect to the Fuse Box

If you have a factory head unit:

This wires the amp to your car’s electrical system to turn on and off with ignition power.

And that’s the basics of hooking up the REM wire! Just match it to a switched power source and you’re set.

How to Test If the REM Wire Is Working

Before finishing your amp installation, it’s important to test that the REM wire is functioning properly.

Here are two ways to verify it:

Use a Multimeter

  1. Set your multimeter to DC voltage mode.
  2. Attach the positive (red) probe to the REM wire.
  3. Attach the negative (black) probe to a ground like the chassis of the amp.
  4. Turn on your car’s ignition. You should measure approximately 12V on the REM wire.
  5. Turn the ignition back off. The voltage should drop back to 0V.

If you get 12V only when the ignition is on, you’ve got a working REM wire!

Turn On Your Car Stereo

  1. Complete all amp connections including the REM wire.
  2. Turn on your car’s ignition, but don’t turn on the stereo. The amp should stay off.
  3. Now turn on your head unit. The amp should power up automatically.

If your amp turns on when you fire up your stereo, then you’ve successfully connected the REM wire. Nice job!

Tips for REM Wire Success

Installing car amplifiers can get complicated, but a properly wired REM connection helps avoid many issues.

Here are some tips:

And most importantly, be sure to reference a wiring diagram specific to your vehicle! This guarantees compatibility with your car’s particular setup.

Follow these tips and your REM wire will be clean as can be.

Other Options Beyond the REM Wire

While the REM wire is the standard way to link your amp’s power to your head unit, there are some other options too:

So don’t sweat it if your setup requires an alternative to the traditional REM wire connection. There are plenty of ways toremotely power up your hot new amp!

Frequently Asked REM Wire Questions

Alright, we’ve covered a lot of ground on the REM wire. Let’s wrap up with some common questions:

What Size REM Wire Do I Need?

12 or 14 gauge is fine for most REM wire runs up to 20 feet. Use 10 gauge for longer distances or multi-amp systems.

Can I Extend the REM Wire?

Yes, just be sure to use the proper gauge when extending the wire to avoid voltage drop. Keep it under 20 feet if possible.

What if My Amp Doesn’t Have REM Wire?

Use a relay or switched power source to remotely turn on the amp. Or install a separate turn-on module to activate the amp without a dedicated REM wire.

Why Does My Amp Turn Off When Bass Hits?

If your amp cuts out during heavy bass, your REM wire may be too small. Upgrade to a thicker gauge wire.

Let’s Hear It for the REM

And there you have it – everything you need to know about the car audio REM wire!

To recap, the REM wire is:

I hope this rundown demystified what the heck that mysterious REM wire is all about. Trust me, understanding the REM wire will make your next amp install infinitely more straightforward.

So go grab your tools, cue up a killer driving playlist, and start wiring like a boss. Your tuned-up ride is calling!