How do I wire two rear aftermarket speakers to my 70 e body radio???

[purplehrtchallenger]

hey guys,
ok, i admit i am more of an engine guy than an audio guy, but am really pulling my hair out on this one.
here is what i got:
I have a 70 e-body with a thumbwheel am-fm radio...
I have the 'rear speaker' knob on the dash...
I have the one stock speaker in the front dash...
I have two aftermarket 6x9 speakers in my rear package tray..their wires obviously do not match the wires or color codes of the rear speaker knob or radio.
I have a mess!

help me out please...how am i supposed to wire this up?  my first thought was to splice the two rear speakers together, but an 'audio expert' told me not to...
any help would be most appreciated!!

thanks,
PHC

[Slotts]

Hey PHC,

I will check my buddy's 70 service manual tonight and let you know.

I looked for your car at the Nats but didn't find it.

Slotts

[purplehrtchallenger]

Hey Slotts!
Thanks a million...you are saving my bacon again!!   
Had a bad experience with the engine on my 70 ebody on Thursday     bottom line was I couldn't make it out to the Mecca of Mopars 
Guess i am going to have to wait until 2010 for the next Mopar Nats--got my orders to go play in the sandbox called iraq for a year come October...totally bummed 

[Slotts]

Hey PHC,

I have a 11 x 17 copy of what you need. I'll send it to you. I still have your address.

If you need a trace done before you receive this, let me known.

Slotts

[Bullitt-]

To the point of using two rear speakers & how to wire them you have to be concerned with Ohms/resistance as it relates to load on the amplifier.. Chrysler used 1 8-Ohm speaker per channel, if your lucky your aftermarket speakers are 4-Ohms making this simple, you will be able to wire them in series & have 8-Ohms resistance, but if they are 8-Ohm speakers you would be better off wiring them in parallel for a total resistance of 4-Ohms. Both are shown here.
http://www.crutchfield.com/S-DSGvqbk41C8/tech/kb334.html

If this were my car I would look into one of these as your OE radio probably does not put out but a couple of watts & those new aftermarket 6x9"s are not going to sound very good underpowered. This would give you the option of left/right-front/back balance & fade and quite a bit more bang for a very few bucks + its small enough to hide.
http://www.electronicsoutfitter.com/ava-1404/boss-audio/p71824.html

[Chryco Psycho]

or use a small Amp

[73james]

If it were mine I would buy a small 4 channel amp and wire the two rears to it and use another channel for the front speaker and you will still have another channel to play with. I would recommend a jensen 4 channel they are cheap but good.

James