Ok well now im installing a radio in a 1990 240sx and i need the real audio wiring diagram like a list of what wire color is what because i had 1 but each 1 has to do wit a certain red wire when there is like 20 million red wires so yeah any input would be appreciated...

 

what?

 

what!!!???

 

Okay now.
WTF?
Are you saying you need which color wire does what?

Constant 12V+: Red/Black
Switched 12V+: Blue
Ground: Chassis
Illumination: Red/Blue
Dimmer: Red/Yellow
Antenna Trigger: Black/Red
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

 

i just need a radio wiring diagram like the 1 u jus gave me above thanks...

 

^^^seriously, dude. Just go to best buy and get it done. I just don't understand what you don't understand. You buy a wiring harness for your car. You splice the wiring harness to your radio harness. (colors match) Then you plug it into your car's harness that is behind the radio-area.

 

Dont go to Circuit City or Best Buy, unless you like getting bent over. No offense to anybody who works there but I would never take my car to either of those places. Dont be lazy and just splice the wires, save yourself 50 bucks. Installing a head unit is not hard.

 

Thats the thing i dont wanna take it to them cuz i wanna learn how to do it myself u kno... all im stuck on is the red wire for the power and the red wire for the rear left speaker because there is like 4 different red wires coming out of the dash

 

To do a good, solid install here is what I recommend you gather
- Soldering iron
- Solder
- Good pair of wire cutters/strippers
- Heat shrink tubing in various sizes
- Zip ties
- Beer



Okay, so you have your radio, your harness adapter, and your ice chest handy, and you have your wiring diagram. First, match up all the wires needed and zip tie the unnecessary wires together and out of the way. Once you have organized your wires in a neat fashion, use a piece of heat shrink over both ends of the wire bundles (has to be fairly large diameter heatshrink), but leave enough wire open to work with. Strip all the wires needed, and place a piece of heat shrink long enough on the wire to cover the solder joint you are about to do. Now comes the fun (and potentially painful) part of the job: soldering. I suck at explaining soldering, so refer to this guide: http://www.crutchfield.com/S-CD3gBbx...ch/kb1807.html but don't heat the wire for 20-30 seconds like they say. You will begin to melt the jacket on the wires. Once you have soldered your wires together, go ahead and slide your heatshrink tubing over the joints and use a blow dryer, heat gun, or lighter to heat it enough to make it shrink onto the joint. Once all of that is done, heat up the larger heatshrink to neatly tie together the bundles of wires so you don't have an effing mess of wire on your hands.

You might ask, "why did I need beer?". The answer is simple: Turn the car on, start tuning, and drink said beer. Being that 240's are notorious for electrical gremlins, you'll need that beer to calm you down when the radio doesn't work right off hand...

Good luck and don't burn yourself like I did last night. I'll show you what happens when you get careless with a soldering iron when I get off work.

 

Or use the little rubber coated metal tubes you crimp onto the wires. MUCH easier.

Although the first 2 radios I ever put in I just twisted the wires together and wrapped them in electrical tape.

 

butt connectors = gay. Even heat seal butts (the ones you're thinking of)

 

But butt connerctors= quicker and easier!

 

Tisk tisk. What is the number 1 rule about 240s?
Quicker and easier isn't the solution. This is why there are coilovers, KA turbo kits, etc.

lmao.

There are 3 types of work done in this world: Fast, Cheap, and Good.
If you want it good and cheap, it will not be fast.
If you want it good and fast, it will not be cheap.
If you want it fast and cheap, it will not be good.


I learned this with my 1st 240sx.

 

I know. I used butt connectors on my radio and it's not very fast now.
Honestly though, whats the harm in using butt connectors? Its completely reliable and better than twisting and electrical tape.

P.S. replace "good" with "reliable"