SC300 Head Unit Wiring for Dummies?
05-19-09, 11:17 PM
#1
SC300 Head Unit Wiring + OEM Sub Working - for Dummies!! (NO REALLY!)
EDIT: How-To complete, everything working including OEM sub!
Here's the write-up:
https://www.clublexus.com/forums/lex...b-working.html
MODS: it might be better to delete this thread or close it =)
Here's the write-up:
https://www.clublexus.com/forums/lex...b-working.html
MODS: it might be better to delete this thread or close it =)
Last edited by raine; 06-21-09 at 05:24 AM. Reason: MODS please delete or close this thread, thanks!
05-20-09, 06:58 PM
#2
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You should have asked 3 days ago, i just installed my metra dash kit so i had a good look at the wires. I used that same diagram on intellexual.net. I'll match up what i remember to what that site says.
12v+ red was gray A4
ACC yellow was blue with yellow stripe A3
Ground black was brown A11
Radio blue needs to be connected to 2 wires. Both are pink. (with stripes?) There are only 2 pink wires so you will easily find them.
Ill+ orange is A2, i think it was still orange in the car.
12v+ red was gray A4
ACC yellow was blue with yellow stripe A3
Ground black was brown A11
Radio blue needs to be connected to 2 wires. Both are pink. (with stripes?) There are only 2 pink wires so you will easily find them.
Ill+ orange is A2, i think it was still orange in the car.
Last edited by Ryeno; 05-20-09 at 07:08 PM.
05-20-09, 08:17 PM
#3
You should have asked 3 days ago, i just installed my metra dash kit so i had a good look at the wires. I used that same diagram on intellexual.net. I'll match up what i remember to what that site says.
12v+ red was gray A4
ACC yellow was blue with yellow stripe A3
Ground black was brown A11
Radio blue needs to be connected to 2 wires. Both are pink. (with stripes?) There are only 2 pink wires so you will easily find them.
Ill+ orange is A2, i think it was still orange in the car.
12v+ red was gray A4
ACC yellow was blue with yellow stripe A3
Ground black was brown A11
Radio blue needs to be connected to 2 wires. Both are pink. (with stripes?) There are only 2 pink wires so you will easily find them.
Ill+ orange is A2, i think it was still orange in the car.
I've got ACC
Ive got ground
I'm working on speakers (I'll be bypassing the factory amp, I've got that figured out already) so the only wires I have left from the aftermarket head unit are:
1. Dimmer (you said A2, will do)
2. "Motor Antenna Control Wire" ???
-(from the manual) "depending on what antenna you are using, connect either to the control terminal of thmotor antenna, or to the power terminal for the booster amplifier of the film-type antenna."
...The only antenna plug I can use is the larger one, I'm guessing the smaller factory antenna plug is for the rear window antenna?
Finally...What's Radio blue?
Thanks for the help so far, I'm actually in the garage installing stuff as I type this
05-20-09, 09:31 PM
#4
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Raine, can you post info on your final install? Several of us SC300 guys down here in Texas will be putting some aftermarket head units (double din) using exsiting OEM speakers and we will need some info/pointers. Do you know the metro kit number for double din units? thks
05-20-09, 09:45 PM
#5
Raine, can you post info on your final install? Several of us SC300 guys down here in Texas will be putting some aftermarket head units (double din) using exsiting OEM speakers and we will need some info/pointers. Do you know the metro kit number for double din units? thks
I'll update the first post with the exact connections I did once I finish... right now I'm getting the interior in (daily driver). The only issues I need to sort out are the antenna not going up and the stock sub. I followed this suggestion regarding the sub (https://www.clublexus.com/forums/lex...market-hu.html) but it doesn't seem to be working.
work in progress, I'll keep updating the thread.
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05-21-09, 02:23 PM
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Dimmer is ill+(illumination) should be A2
Motor antenna control is the radio wire which should be blue on your aftermarket hu. You need that 1 wire to both(2) pink wires in the one of the harness's. And yes you only use the larger antenna plug.
Motor antenna control is the radio wire which should be blue on your aftermarket hu. You need that 1 wire to both(2) pink wires in the one of the harness's. And yes you only use the larger antenna plug.
Last edited by Ryeno; 05-21-09 at 02:29 PM.
05-21-09, 03:10 PM
#9
Anything more concrete than "the two pink wires"? I found matching pins more reliable than wire color, as some of the wires I spliced were not the same color that was specified in those other threads (maybe model year change or something).
The big thing is getting the damn factory sub amp/woofer working (so that it would be a true "head unit upgrade only" job).
05-24-09, 12:43 AM
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Were in california are you? I might be able to help you. Also what year is your car? My car is a 92 so the colors i listed are for it. I know my dimmer works in my car.
As for getting the factory amp to work, well you got 2 options. You can try runing the wires through the wiring harness which might be confusing. Or add the wires directly to the amp. But doing that would be a PAIN in the ***. You'll have to remove the rear seat (both parts), remove the side panels which requires you to remove the seatbelts. Then remove the rear deck. Then after all that you would wire your own 12v+, rem+, and use a line output convertor to get your rcas hooked up.
I personally didnt want to do all that work so i use gutted the rear deck and went aftermarket.
As for getting the factory amp to work, well you got 2 options. You can try runing the wires through the wiring harness which might be confusing. Or add the wires directly to the amp. But doing that would be a PAIN in the ***. You'll have to remove the rear seat (both parts), remove the side panels which requires you to remove the seatbelts. Then remove the rear deck. Then after all that you would wire your own 12v+, rem+, and use a line output convertor to get your rcas hooked up.
I personally didnt want to do all that work so i use gutted the rear deck and went aftermarket.
05-25-09, 12:53 PM
#11
Were in california are you? I might be able to help you. Also what year is your car? My car is a 92 so the colors i listed are for it. I know my dimmer works in my car.
As for getting the factory amp to work, well you got 2 options. You can try runing the wires through the wiring harness which might be confusing. Or add the wires directly to the amp. But doing that would be a PAIN in the ***. You'll have to remove the rear seat (both parts), remove the side panels which requires you to remove the seatbelts. Then remove the rear deck. Then after all that you would wire your own 12v+, rem+, and use a line output convertor to get your rcas hooked up.
I personally didnt want to do all that work so i use gutted the rear deck and went aftermarket.
As for getting the factory amp to work, well you got 2 options. You can try runing the wires through the wiring harness which might be confusing. Or add the wires directly to the amp. But doing that would be a PAIN in the ***. You'll have to remove the rear seat (both parts), remove the side panels which requires you to remove the seatbelts. Then remove the rear deck. Then after all that you would wire your own 12v+, rem+, and use a line output convertor to get your rcas hooked up.
I personally didnt want to do all that work so i use gutted the rear deck and went aftermarket.
WAIT - something you said made me think... in one of the threads listed above regarding the factory sub, they mentioned nothing about running 12v+/rem+ to the factory sub amp. They're not getting 12v+/rem+ from the fuse box?
05-25-09, 02:12 PM
#12
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I'm not sure about the 12v+ but the rem+ for sure comes from the HU Because if you turn off the HU, the sub turns off too. So you could either splice the wires into the harness underneath the climate control or go straight to the rear deck and do it there.
05-26-09, 11:19 PM
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Go here
http://www.intellexual.net/faq/lexusstereo.swf
and click
pioneer sub amp.
Splice in your own 12v+ and 12v ACC along with your sub+/- from the rca to speaker wire.
http://www.intellexual.net/faq/lexusstereo.swf
and click
pioneer sub amp.
Splice in your own 12v+ and 12v ACC along with your sub+/- from the rca to speaker wire.