i think ill give that a try today. so twist the constant and switched together into one butt connector then hook that to the power on the stereo?

 

uh. Correct me if Im wrong, but no. Your 12v constant and your 12v switched should remain constant and switched, respectively. Make absolutely sure youre getting power and ground to your correct wires using a multimeter. After that, make sure the radio isnt toast. I deal with stuff like this all day where I work. Its usually a bad/insufficient ground or a toasted radio.

 

Definitely keep those wires SEPARATE! Try changing around your ground location... usually when I'm having electrical troubles, it's my ground that is messing everything up.

 

haha i dunnos what wrong, but we tried hooking it up on another car and it still wont work so im pretty sure it was defective. i just bought a sony player today and it comes on and everything and plays cds but theres no sound. my car came with brand new sony explods, so now im kinda stumped again. lol why cant i just have a stereo that works?

 

This is why I asked you earlier if you had a factory amplified system. Most times the 240sx does, you need to bypass that factory amplifier. All you need to do is locate it, and "loop" the wiring of each speaker so it's just a straight feed from speaker to head unit. This is the best way of doing it, I know there are amplifer bypass harnesses out there, but 1) You cut your harness off, and 2) They typically can add more resistance and create ground-interference.

Good luck, again let us know what you come up with. Also, please try to search, as things like this have been covered in several topics of discussion.

 

alright thanks, hopfully that will do the trick. yea i searched alittle but mostly just found diagrams. mabey i shoulda tryed alittle harder but thanks for helping my out anyways.

 

... ya know, if you lived closer, I would say just bring it to me at work. I work for an audio shop here.

 

I've never done the method myself, but what was just described has worked for a few of my friends with 240s Hopefully you'll have the same luck!

Sure wish you worked here in New Jersey, I'm looking for an upgraded sound system for my car to accommodate my latest toy

 

alright it works. i removed the stock amplifiers in the door panels and ran the speaker wires strait to the speakers and everything is fine now, lol its weird listening to music when driving. haha ive never done it before. but thanks guys for your help.

 

yea, if you have basically any modern system, it will have postamp outputs to go to speakers, and then normally a preamp output to be used for subs. and nissan was wierd and had amps for their speakers.

 

...tell me about it. They were like 10w amps. Have you ever looked at the stock s13 speakers? 8w nominal.

 

anyone in L.A. who can come over tomorrow and help me out with my stereo
the wiring harness was already cut so i didnt **** with it....

i hooked up everything accourding ly to ur guyses chart a couple post back and to wut the stereo chart said, i get it to power up and everything but no sound
period
i checked my wiring over and over... i dont knoe someone help me please tomorrow 323-574-7555 id really appreciat it

 

Your audio output from the radio is probably still going through your factory amp, that needs to be bypassed.

I'll see if I can find you a tutorial for now to show you how to bypass the factory amplifier. Thats the best I can really do, seeing as I live on the other side of the country...haha. Maybe one of these guys can help though...

 

Just get the factory wiring harness diagram and that will tell you what wire does what. beware, many wont be used.

 

Enjoy!

1993 Nissan 240sx Factory Wiring Diagram:

Constant 12V+........................Red/Black
Switched 12V+........................Blue
Ground........................Chassis
Illumination........................Red/Blue
Dimmer........................Red/Yellow
Antenna........................Left Rear
Front Speakers 4" x 6"........................Doors
Left Front (+)........................Blue/White
Left Front (-)........................Blue/Yellow
Right Front (+)........................Brown
Right Front (-)........................Brown/White
Rear Speakers 6 1/2"........................Rear Deck
Left Rear (+)........................Red
Left Rear (-)........................Green
Right Rear (+)........................Blue
Right Rear (-)........................Pink