Question about MTX Thunder 4250D Car Audio Amplifier

1 Answer

How long should a ground wire be and does it have to be the same guage as the power wire

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 70 Answers

The ground wire should be no longer than 3 feet the shorter the better just make sure it touches bare metal and yes it needs to be the same guage as the power wire

Posted on Aug 04, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

With the wiring diagram for the stereo, there are two very similar looking yellows. How can I tell which is the power and which goes to a speaker?


Hi Anonymous:
Power supply wire is usually much heavier guage than speaker wire.
Power wire may have an in-line fuse.
Power wire may be paired with a black ground wire.
Power wire is commonly colored red.
Speakerwire is usually paired with a similar light guage wire and originates in a cluster of similar light guage wires.

Apr 29, 2015 | Cars & Trucks

1 Answer

My temperature gauge doesnt work


Easy test ground the sensor wire to ground(intake manifold) the guage should max out if not check for power on the back of the instrument panel at the guage if you have power on one side ground the other side if it works .If grounding it at the guage makes it work bad connection at the sensor or broken wire

Feb 01, 2014 | 1995 Jeep Grand Cherokee

1 Answer

2001 chevy blazer replaced fuel pump with fuel pick up switch and fues guage still does not work


THERE SHOULD BE 3 WIRES, FROM PUMP/SENDER UNIT, 1 WIRE FOR PUMP POWER, 1 WIRE FOR GROUND, & 1 WIRE FOR FUEL GAGE, THE FUEL GAGE WIRE GOES DIRECTLY TO GAGE , INSPECT THIS WIRE , MAY CHANGE COLOR ON ITS WAY TO GAGE, WIRE MAY HAVE BEEN DAMAGED UNDER TRUCK, ALONG FRAME RAIL, OR HAS BECOME CORRODED, A BUMP IN THE WIRE INSULATION(CORROSION), ALSO, CHECK ALL GROUNDS, REPEAT, ALL GROUNDS TO FUEL PUMP CICUIT, EVEN IF THEY LOOK OK, THEY COULD BE BAD GROUNDS, YOU NEED GOOD GROUNDS TO COMPLETE ANY CIRCUIT !!! 2001 TRUCK, I'D QUESTION YOURS !!!!! WHAT SHAPE WAS YOUR WIRE HARNESS @ PUMP, THEY GO BAD, ANYTHING UNDER THE TRUCK !!!!!! STAY IN YOUCH, LIKE TO KNOW OUTCOME !

Mar 25, 2013 | 2001 Chevrolet Blazer

1 Answer

I HAVE A 2004 CHEVY 1500 5.3L. THE TEMP. GUAGE PEGS OUT BUT IT IS NOT RUNNING HOT. I CHANGED THE SENDING UNIT STILL THE SAME.


You may have a bad guage. To check, ground out the sender by placing a screwdriver or alligator clips accross the ground tab and the center positive terninal. If the guage works you would normally expect a sender problem, but since you put on a new sender (assuming it's wired correctly [ no offense ]) you will need to trace t the wires from the guage to the SU. The fuel guage power lead is pink ( or at least it is on boats ) Look for a bad connection, corrosion, frayed wires or anything else that looks abnormal. You may want to simply replace the existing wire temporarily with another wire. This new wire should tell you immediately if your guage is bad. Good luck!

Oct 30, 2012 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

My amp is giving me very little power. what should i do?


There are several things you need to look at.

First, do you have the right guage wire for your amplifier. You need to look at the fuses on the amp. This will give you a good idea what kind of power draw it is putting on the electrical system. If you have one 40 amp fuse, 8 guage should be sufficient, 65 or higher, 4 guage is preferred.

Make sure that your ground is good. Always use the same guage wire as your power wire. If you have a multimeter and know how to use it, it will help find the best place to ground your wire. Always sand around where you mount your ground screw to allow for the best contact of your wire.

Check to make sure your RCA gains are turned up on the amp.

This should give you the best chance of getting good power to your amp, and thus, to your subs. If you still have trouble, there may be internal problems with your amp.

Sep 09, 2011 | Hifonics Car Audio & Video

1 Answer

What makes the bass1500 stay in Protection mode????


Ok, usually a fluctuation in amperage trips the protection on an amplifier. To start, check your ground. This is typically the problem. Use a multimeter to ensure that the ground you have is good. Second is the guage of wire. Look at the fuses on your amp. Add them together and use that as the amp draw total. 50-65 amps from 13 feet to 22 feet run of wire requires a 4 guage. If the draw is larger, you may need larger guage wire. Also, match the ground wire with the power wire in guage.

Happy Hunting

Aug 14, 2011 | Car Audio & Video

1 Answer

My audiopipe amp went into protect mode randomly. even though i have to prevent fuses on my power wire


Ok, for starters you need to clarify if you are saying you have "two" fuses on your power wire. That's what I get from your statement. My question would be why? As long as you place the initial fuse within 12 inches of the battery, you're cool. The purpose is to stop the flow of power in the event of a spike so that your power wire doesn't fry and cause a fire under your vehicle carpet. Second, your amplifier should have fuses that trip when this occurs too. If this has been occuring since you installed the amp, you need to recheck all your wiring (I recommend removing the extra inline fuse). Two things trigger an amps safety mode. 1- an amperage fluctuation or overload. It will sense when there is to high or too low of an amperage flow. Too much fluctuation can damage internal components. 2- Your amp is malfunctioning. If you have an internal short, this could occur. (really it's tied to the first one because it is sensing that the short is allowing a full flow of power at the short, thus causing a fluctuation). Start with the ground wire. Most amperage problems happen because of a poor ground. Think of power like water. If you have a good flow coming in, but poor flow going out, it gets kinda....backed up. This causes a fluctuation of the amperage since the electrons cannot flow properly. Setting off the protection. The other thing to thing about is the correct guage of wire. If you have too small guage wire, the amperage will dip low during heavy usage, causing the other extreme of the fluctuation.

Check what you have. If you are running a load of 50-65 amp (look at the fuses on your amps and add them up), then 4 guage is good from 13-22 feet. If you are running any higher than that, you will need 2 or 0 guage wire. You will also need to make sure to have a fuse slightly higher that the amperage draw you are expecting. As always, make sure your power and ground wire match. I have seen alot of kits made with smaller guage ground wire. They work of the premise that the shorter distance produces less resistance, thus requiring smaller guage wire. I say why risk it. Always use a multimeter when checking for proper ground placement. Also, if you are going to use aluminum or tinned wire (trust me, it's out there), you will need to increase the guage of the wire.

Happy hunting

Aug 14, 2011 | Audiopipe Car Audio & Video

1 Answer

Grand prix gas gauge not working


should be a grey wire going to the top of fuel tank connects to fuel guage / when the guage in the tank reads grounded it shows full , no ground it shows empty. if you ground that grey wire and the guage jumps to full then faulty guage if nothing maybe bad ground on the tank itself. the guages are a reostat like a tyco race car gun the more it moves the more it grounds .. good luck

Nov 19, 2009 | 2000 Pontiac Grand Prix

1 Answer

Why does My AMp turn off


Hello, 
  You need to use 4 guage or larger wiring with this amp. Also you need to make sure the power wire and ground wire are the same guage.(thickness)  
   The ground wire needs to be as short as possible from the amp to the metal of the car. 
  Make sure you are using a 14 guage or larger speaker wire form the amp to the speakers.

Jan 15, 2009 | Jl Audio 250/1 Car Audio Amplifier

1 Answer

Amp in protection mode


like many other problems people have with amps it is usally a ground issue, grounds have to be in very good spots especially with high power amps, move your ground to a different spot, with zero guage wires really is all you need, double grounds would be inopropriate here. hope this helps

Oct 06, 2006 | AudioBahn A4125HCT Car Audio Amplifier

Not finding what you are looking for?
MTX Thunder 4250D Car Audio Amplifier Logo

Related Topics:

244 people viewed this question

Ask a Question

Usually answered in minutes!

Top MTX Car Audio & Video Experts

Professor_V
Professor_V

Level 2 Expert

92 Answers

Matthew Spark
Matthew Spark

Level 3 Expert

1066 Answers

yadayada
yadayada

Level 3 Expert

76051 Answers

Are you a MTX Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...