For a sc300 without a nak system the amp output colors are on the small plug.
they are as follows:
Right/front blue - Turquoise +
Left/front Purple - pink +
Right/rear White - Red +
Left/rear yellow - black+

hope this helps anyone rewiring for aftermarket amps
oh and by the way anyone wanting to do bigger speakers in the doors or rear area. Relatively any 6 1/2 should work fine. there is plenty room in the doors. You'll just have to fabricate something.

Jay

 

NEED HELP QUICK! lol....i need to know what wires you ran to the power and how did you wire up the stock amp to the new deck? i'm just installing my alpine deck and i tried locating the power source wire but thats is something i cant figure out. eekksss....help me please!

 

or use this.... http://www.intellexual.net/faq/lexusstereo.swf

http://www.intellexual.net/faq/lexusstereo.swf

 

so...correct my if im wrong bc im about to do the swap right now.
What im gathering is that in order to put in an aftermarket deck that bypasses the factory amps and wires the speakers directly off the aftermarket deck, I should hook my alpine's harness directly to those wires comming off output of the factory amp?

 

I'm glad to see my flash file is still in use after all these years.

Yes, to bypass those amps you will want to run from the HU wires (use the existing stock ones from the schematic), then if your removing the OEM amp you can splice the stock HU wires to the wires from the amp.

Or, I'd just run new wires. It's not that hard and you can up the gauge.

P

 

do you guys know what the stock speaker sizes are? (front mids and highs as well as the rears) thanks for the info.

 

stock SC speakers are 4" all around

 

if i remember correctly, the rears are larger no? 5.25?

 

not stock, they are 4"

5.25" fit down into the rear deck with no modifications though. you just have to remove the black housing and screw them into the deck.

 

6.5 are drop in the rear deck, i put pioneer 6.5 rev series on my old 5spd

 

i didn't try 6.5's, the 5.25's fit really well in mine while i had them

 

does this work for nakamachi too by like moving a to where b is and shifting bcd to the left more?

 

does anyone know if sub amp input accepts low level or is it high level input?

 

Old bump I know... but in searching, I keep seeing where people have direct dropped 6.5" speakers without cutting, anyone have and a speaker type they recommend or have done theis with? I dont see it happening.