Okay so I'm not the best with electrical but I've got a bunch of radio speakers for a normal house stereo and I'm wondering if I can pull them out of there box and wire them in to the pre existing speaker wires in the trunk door and trunk, I've also got tweeters from them to that are from the speakers that I want to wire into the front pillers. For the rear ones can I just wire them into the wireing harness there or do I need something to amplify/regulate them? And how would I wire in the tweeters? Is it worth it or should I wait and just get "car" speakers? I think I'm going to put a amp and sub in but that's not going to be for awhile right now I just want more then just the front two speakers in the front.
Thanks in advance and sorry I'm useing my phone to post

 

Car audio speakers are 4Ω and home stereo speakers are 8Ω. Wiring in home stereo speakers to a car will fry the head units amplifier. I found that out the hard way a couple decades ago.

 

They might need more power, and ohms might be wrong for car stereo.

 

I remember a guy back in high school put some home stereo 15's in their original box in his Toyota & that @#$& rocked.

 

Thanks for the info I'm gonna hold off and get speakers later. The stereo speakers I have are 6 and 8 ohms.

Thanks everyone.

 

They wont "fry" a hu just by plugging them in. You'll have to turn it up more for the same volume since they have a higher impedance so they will require more power. Turning it up too loud will overdrive the internal amp and fry it that way.