Amp Power Source

[diablo_bt]

Hi there, I'm thinking of purchasing an amp to install in my car soon but have been thinking of how I am going to wire the power source up in my car. How do most people normally do this?

I have been reading how most head-units are meant to have a "remote on" cable but I looked on the back of my head-unit and there doesn't seem to be one, so I'm guessing I'll have to mount a separate switch for it somewhere.

What I'm more concerned about is where I will get the power source from. Would it be possible to just wire it into the same power source that the head-unit uses, or is this likely to drain too much power from there? If I was to buy a small 300w amp would it really drain much power at all?

Thanks in advance.

diablo_bt

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[btlking 10+ year member]

is this a aftermarket hu?

 

[jmoneypierce21 10+ year member]

1. Your gonna wanna run a power wire hooked to ur positive terminal on the battery back to the amp.

2. Run a ground wire by the amp.

3. Wire the remote wire into the wiring harness on the head unit(check manual but usually blue wire in harness)then run this back to amp.

 

[diablo_bt]

is this a aftermarket hu?

Yes, the head-unit is one I have bought and installed myself. It's a Lanzar VBD1400 Vibe series head-unit.

1. Your gonna wanna run a power wire hooked to ur positive terminal on the battery back to the amp.2. Run a ground wire by the amp.

3. Wire the remote wire into the wiring harness on the head unit(check manual but usually blue wire in harness)then run this back to amp.

I wasn't sure if running it directly off the battery terminal would be such a good idea if I didn't have any "remote on" cable on my head-unit, which is why I was asking if it would just be possible to wire it into the same source as the head-unit so that when the ignition is turned the head-unit will power up with the amp.

A diagram of the cables on the back of my head-unit can be found on page 6 of this PDF manual... http://www.lanzar.com/manuals/VBD1400.pdf

 

[jmoneypierce21 10+ year member]

That would be the remote(wire that turns hu on when car turns on) yes u want to wire into that and run to amp. but u need to run a fused power wire from battery to power amp. be sure to run rcas lol

 

[diablo_bt]

Ah right I see now //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif So the amp can just be wired to the battery terminal and a cable can be run from the blue "power antenna" cable on my head-unit to the "remote on" input on the amp, which will cause the amp to turn on and off whenever the head-unit is on?

 

[btlking 10+ year member]

correct but you do need rcas for the sound to get to the amp

 

[diablo_bt]

correct but you do need rcas for the sound to get to the amp

Yep, and so because this is to power a sub, I could just use the subwoofer RCA output on my head-unit to run a signal to my amp?

 

[DejaWiz 5,000+ posts]

Yep, and so because this is to power a sub, I could just use the subwoofer RCA output on my head-unit to run a signal to my amp?

Correct.