So I recently got a deck installed at Best Buy and everything was running good until last week. I started to notice that everytime I push on the clutch pedal then the break my lights dim and my deck shuts off.. the same thing happens when I use my blinker. Will (bccentaur3) said it may be a loose ground? If anyone knows what we can do... PLEASE help.. cause it's getting really annoying.

yeah that's the first thing i would check? did you get the problem solved?

Go back to Best Buy and have them look at it. Their installs are lifetime guaranteed.

i agree with Got Toyota i see this far to many times and people just don't seem to go back and ask the installer esp if there wasn't a problem before

ya know.. i think i figured it out. it was my battery all along. but i went to auto zone to get it tested and they said that it was good? Who knows what it could be. ha. I will figure it out. Thanks guys!

All your battery does is start the car. After that, it's all the alternator; so i'd have that checked as well. Sounds like a wiring issue IMHO.

I took a look at it. Just bad grounds. All the grounds had rust on them. Shook all the rust off and some wd-40 now the car starts no problem. Forgot to mention her car wouldn't after running to the store or something. Alt checked out fine. Battery checked out fine. Starter is still good.