correct wiring for speakers

[scrapper]

I am going to install an aftermarket radio that a guy who I work with had removed from his wifes car.The problem is that they is no wiring diagram on the radio and the wires are not labeled.There are 4 sets of speaker wire,white,grey,purple and green.Which colors should go to what speakers?Also there are 2 power leads,red and yellow.I know 1 should be battery power and the other sould be ignition power,but which is which?

 

[jim82]

red is constant, yellow is ignition. cant help you with the speakers excep just split the same colored pairs up.

 

['73 K5]

red--turnkey
yellow--constant
black--ground
blue or blue w/white--amp turn-on, or power antenna
orange or orange w/white--illumination
white --drivers, front positive
white w/black--drivers, front negative
grey--passengers, front positive
grey w/black--passengers, front negative
purple--passengers, rear positive
purple w/black--passengers, rear negative
green--drivers, rear positive
green w/black--drivers, rear negative

'73 K5
Chevy good...Ford bad

 

['73 K5]

I just realized the other guy that replied said just the opposite about the power wires. Trust me, I'm right. No offense to the other reply, but I install stereos 40+ hours a week. Yellow is always constant and red is always ignition/turnkey.

'73 K5
Chevy good...Ford bad

 

[jim82]

your right - that was my bad, red is ign and yellow is const

 

[scrapper]

Thanks for all the help

 

[Cmoe]

If you haven't already cut the wires on the plug of your truck you can also get an adapter that will let you put the stock deck back in when you sell your rig.

C'moe

<font color=black>the blazer is "Back in Black"