Tip & How-To about Car Audio & Video

How to wire your subwoofers correctly...

Much like many aspects of electrical car audio must be wired properly to ensure that you don't have short circuits, fires, and damaged equipment. As an 8 year experienced car audio installer I still forget sometimes. The best thing to do if you aren't for sure is consult a resource, the two top sites that I have found that have adequate wiring diagrams and basically give you a picture of what you're supposed to be striving for. www.the12volt.com is the most highly recommended site in my book. They have a section in subwoofer wiring that allows you to choose the amount of drivers you have, the number of voice coils per driver, and the impedence of those voice coils. This is a big resource if you don't know what specific subwoofers to buy or what amp will push your currents subs to their potential. It gives you all the options for wiring possible and explains the ohm load you will be presenting to your amp ensuring fail safe wiring.

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how do i change the starter motor


you don`t say car and motor or year. the basics is find starter, get proper size sockets and tools to remove starter, disconnect electrical wires and ensure they don`t short out, undo starter and remove from car, install reverse order.

Jul 20, 2015 | Cars & Trucks

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We have a brand new Rinnai gas heater, Avenger 25. The first two times we operated it, it was fine, but since then a code 13 comes up after 3-4 minutes and the heater turns off. Rinnai said we could take it back to the store as it is brand new, however now we cannot detach it from the wall bayonet! Any advice on these two problems please?


These are the possible issues with the unit, based on the code list and description

Check that the gas is turned on at the water heater and gas meter. Check for obstructions in the flue outlet.
Ensure gas line, meter, and/or regulator is sized properly.
Ensure gas type and pressure is correct.
Bleed all air from gas lines.
Ensure proper Rinnai venting material was installed.
Ensure condensation collar was installed properly.
Ensure vent length is within limits.
Verify dip switches are set properly.
Ensure appliance is properly grounded.
Disconnect keypad.
Disconnect EZConnect™ or MSA controls to isolate the problem.
Check power supply for loose connections.
Check power supply for proper voltage and voltage drops.
Ensure flame rod wire is connected.
Check flame rod for carbon build-up.
Disconnect and re-connect all wiring harnesses on unit and PC board.
Check for DC shorts at components.
Check gas solenoid valves for open or short circuits.
Remove burner plate and inspect burner surface for condensation or debris.

Clean inlet water supply filter.
On new installations ensure hot and cold water lines are not reversed.
Check for bleed over. Isolate unit from building by turning off hot water line to building.
Isolate the circulating system if present. Open your pressure relief valve; if unit fires, there is bleed over in your plumbing.
Ensure you have at least the minimum flow rate required to fire unit.
Ensure turbine spins freely.
Measure the resistance of the water flow control sensor.
Check for DC shorts at components

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May 31, 2011 | Heating & Cooling

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just received a profile 250, used, what wire do i hook up?


  1. Fuse amplifier’s power wire at the battery.
  2. Be sure to fuse the power wire within 12” of the car's battery. This will protect the car's battery in case of a short circuit between the power amplifier and battery. THIS IS A MUST, the amplifier's built-in fuse will only protect the power amplifier not the car's battery.
  3. Use high-grade wire connectors. Use Proper power wire size for maximum current transfer and safety. Improper size power and ground wire can reduce the amplifiers power and poses a risk of damage to the amplifier and the vehicles electrical system. Please follow the recommended "Amplifiers Power Cable Requirements" to ensure maximum power transfer and safety.
  4. To ensure maximum power transfer and secure safe connections, it is recommended to use high-grade barrier spades (for connection at amplifier) and terminal rings (for connection at battery).
  5. Do not run any wires underneath vehicle. Exposed wires have a chance of being cut or damaged. It is best to run all wires through the vehicle under the carpet and/or side panels. This lends to a cleaner installation and less risk of damage.
  6. Use caution when mounting amplifier. Remember there are many electrical wires, gas lines, vacuum lines, brake lines, as well as a gas tank in the automobile. Make sure you know where they are when mounting the amplifier to avoid puncturing lines, shorting wires, or drilling holes in the gas tank.
  7. To avoid possibility of induced noise from the car's electrical system (i.e. popping noises or engine noise), Keep signal wires (Speaker or RCA) away from any electrical wires.
  8. In order to reduce the chance of ground loops (i.e. engine noise); make the grounding wire as short as possible to reduce the wire's resistance. Also, when using multiple components, make sure all units are grounded at the same point.

  9. Avoid sharp edges when running the wires. When laying wiring inside the car, watch for welding burs in channels throughout the car. If necessary adequately grind, finish sand or fill in around any ruff spots so wires will not be punctured by sharp protrusions. Use a grommet to protect the wire when running through the firewall.
any more ??'s look up profileuse.com

May 11, 2010 | Profile 200SX Car Audio Amplifier

1 Answer

How can i get this amp out of protection mode?


You have a short circuit. I don`t know this particular piece of equipment but you should check all the output transistors/chips. Try disconnecting ALL the supplies to ALL the output devices and switch on, It should fire up, If it does, reconnect the positive AND negative supplies to one channel. If it still fires up, reconnect the next channel until you find the faulty channel then you could try doing comparison checks between the bad channel one of the good ones. These amps tend to use MOSFETS and are extremely intolerant to bad or loose connections. I hope this helps. You`ll probably find that you`ve got poor wiring, That will be your original fault. Ensure you make ALL connections good and sound before reconnecting the amp up with new devices in or you WILL be back at square one with no amp again. Ian

Jul 19, 2009 | AudioBahn A8001DT Car Audio Amplifier

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