Is my car's subwoofer causing my electrical probems?

Is my car's subwoofer causing my electrical probems? - 1

Added (1). I have an 02 honda accord with a fairly recent battery. I bought a little 300-500 watt subwoofer that is powered and installed it myself. Within months, the battery had some serious problems. When turning on my lights, the stereo would turn off. Within the next couple of weeks, the car would completely turn off when i turned on my lights or pressed my breaks. I had the battery replaced and everything was fine. The sub isn't hooked up right now.
What would cause this?

95 Honda Accord engine is revving in park?

Hey whussup I have a 95 Honda Accord. 234k on it, when I drive for awhile and park the engine starts to rev up and down. What could be the problem? And how much to fix.

Honda accord, civic, or toyota corolla?

I have a 23k spending limit should i get like the corolla or civic with all the options or the accord lx. I like the options on the civic and corolla but would those cars make me look like a wuss?

What's better Honda or Toyota?

Am planning on getting a new car on summer and I have couple cars in mine. Am thinking of a 2015 Toyota Camry or a 2015 Honda Accord. I never liked Toyota until I drove the 2014 Toyota Corolla I like how they drive but I also grew up with a Honda and they drive good also. Am just asking which one is more reliable and better? 2015 Camry or 2015 Accord. Btw I live in California

How much should rebuilding a 2000 Honda accord bottom end engine cost?

I purchased a vehicle with over 200, 000 miles on it for 2900. I don't know what I was thinking. Now the engine is burning oil, but according to the seller he rebuilt the top end and in order for it not to burn oil I need to have the bottom end rebuilt. How much does a job like this cost? I don't know much about vehicles, besides the research I've done. Any advice would really help.

Are 90s cars consider classics now?

If I have a 1990 Honda Accord, Civic, Camry, etc. Which is roughly 25 and a half years old, will it be considered a classic car?

If not, what is the definition?

91 Nissan 240sx hatchback or 86 Honda Prelude?

91 Nissan 240sx hatchback or 86 Honda Prelude?

Added (1). For 400 i can get 2 240sx one hatch one regular (hatch has title) or for 550 i can get a 86 Prelude with title and an 89 accord (no title). Which ones should i buy for my project car?

Honda Accord Sport 2014 only getting 22 mpg? Problem?

I recently purchased a brand new honda accord sport 2014 in on june 9th 2014… Its hasn't even been a year yet! On my dash/speedmeter it sats my average is only 22mpg? Wtf is wrong with my car? Its a honda… Its suppose to get 36! I barely drive fast? Is this a common problem? Mechanical issue with the car or? Someone help!

and btw, i have simple mods on my cars than even suppose to make the mpg a bit better… I have a takeda short ram intake and a takeda axle back!