Hello....

Got a 2001 Ford Explorer Sport.

I recently just installed an Alpine Head unit which is a dramatic change over the stock head unit (single CD) What a difference!

When I have the radio turned up at louder volumes, the little lights (preset and mode buttons) on the Alpine head unit blink/pulse to the beat of the music.....

I've noticed this on other car stereos that I've owned in the past, but never did anything about. (year s ago) If I recall correctly, I read somewhere about a fix to this issue......something about running a new/ larger 12v positive lead to the head unit....

Does anyone have some info on this?

Any info is GREATLY appreciated....

Thanks and best regards,

Patrick

 

Big power in big power out make sure you have a ground to match whatever power draw you have. Mfr should list power draw in the instructions, good luck.

 

You are pulling too much power through wires that are too small. When the musical notes pulse, the amp is drawing peaks of current. Since the wiring is too small to carry the current load, the voltage applied to the unit drops. The reduced voltage causes the lamps to dim in time with the current peaks/voltage drops.

If you want to fix it properly, you will need to install appropriate wiring all the way to the battery, both positive and negative. A large capacitor is also suggested if the unit is powerful enough.

Steve

 

Im no pro, but I have been told that is normal. That means your amp is working at full capacity. Your stock wiring should be plenty large enough. Even if you replaced the wires up to your radio, the lead comming from the radio and through the connector is still relatively small. I have had lots of different head units, and all have done it a high volumes. I suggest you either ignore it or turn the radio down.

 

I was always under the impression that the alternator wasn't rated high enough...maybe not though...

 

Wouldn't the battery kick in?

If you're bumping it that high, you'd probably want to get an external amp. You'll have much better sound quality because those things can push out much more power than a headunit (because it has a direct connection to the battery).

 

When you turn up the volume you are using current inside deck to power speakers. This makes almost all radios dim to the beat.
With an external amp, you eliminate this draw.

Some alpines do recomend constant power,yellow wire,Direct to battery!
Good luck