Rep Power: 0

When I'm driving with the stereo on, occasionally the car and the stereo together will switch off for a split second. The display on the stereo turns off and even the rpm dial cuts off and starts falling towards zero. And, my lights seem dim, and they're even dimmer when the sub is working hard.

I have a hi-lo converter on the stock deck, a four channel kicker, and a two channel amp going towards the 10" in the trunk.

The 4 channel is pretty old. I get some feedback from speakers when its on. The audio guys said i need to replace it.

So far, I've had to replace two fuses because they blew. It was weird because when I have that fuse blown, the audio will work until I start driving.

I've also had to replace my alternator three times before I even had an upgraded audio system.

My question: could the cutting out be attributed to a fuse, or is it something else? I appreciate all feedback.

 
Rep Power: 812

check battery connections and also make sure the ground wires are good.

 
Rep Power: 237

I had something similar to this, where my car would just stumble as the power cut out completely...it was really strange. It happened so randomly that it was hard to diagnose, but after tightening up my battery cable, it hasn't happened again. I would definitely check your grounds, as that's a good bet!

 
Rep Power: 0

First off, what are all the fuse current ratings? Especially the difference of the power line fuse and amp fuses.
Which fuses blew? On the amps? or before the amps?
Are the fuses blowing only when your car is in motion, or will they blow if stopped? Or do they blow after you take a turn or hit a bump or something else?
How is everything wired? Power-wise that is. The Hi-to-Low converter is just for audio, and shouldn't cause this kind of problem.

Fuses blow for two reasons:
1) Short circuit: This usually makes sparks to a certain degree. Its bad.
2) Over load of the fuse(s): The device, amplifier for example, is trying to pull more current than the fuse is rated, and if using the right fuse, usually indicates a malfunction of the device. This would be if the fuse on your amps are blowing.

I would say to try the system without the amp that's giving you problems, running just the sub amp. If it doesn't occur, theres your problem.

The only other thing I can think of, besides a loose terminal connection on the ends of the wire, is that there is either part of the power (+) wire that is cut, nicked, or somehow the wire is touching metal. For that matter, any other wire in the car, not necessarily what you put in, could have the same problem.

I was/am having a problem in my truck, an 88 Suburban where there was a severe parasitic drain to the point where it was killing batteries and alternators. The whole truck was a mess from the previous owner(s), and I had to do a lot of work on it to even get it drivable and running, plus all the crap I put into it. I had a 5.5ft wide speaker box.

 
Rep Power: 0

1234

 
Rep Power: 291

Check connections on the alternator as well.

 
Rep Power: 242

yes check alternator, my wifes nissan did this and it turned out to be the alternaor fried so everything was runnin off the batteies so occasiaonally the car just stopped running while drivin on highway, so check battery connections, grounds and go to pep boys to see what voltage ur alternator is puttiin out

 
Rep Power: 0

Thanks for the advice. I will check everything and let you guys know what's going on.