Quick wiring question

[Stephen@NCAutoUSA]

So I did my stereo upgrade about 4 years ago. I did aftermarket speakers and subwoofer but kept the OEM headunit.

I did some work on this cf center console and decided to put my single din headunit in finally that's been laying around. The only problem is I forget how I wired things a little. I thought I read a while back it's easy because I used the SOS aftermarket to OEM stereo harness so here goes my question.

I have a new harness for honda aftermarket. It plugs into my factory harness and has wires on the end. On the SOS harness that's for the OEM headunit it has 2 RCA's that I had a Y cable on because the OEM headunit only controls front and rear. So I believe I put my fronts as the speaker components and the rear was the bridged subwoofer if that makes sense.

The confusing part that I forget why it worked was that on the SOS harness itself I spliced in wires. I did 5 total. Solid blue=power supply, Grey/black= Right front Neg, Solid grey=right front positive, white/black=left front Neg, and solid white=left front positive.

I removed the SOS harness but for some reason don't know if I can just plug my RCA's in directly to the headunit? If this is the case I need 2 more Y connections right? Let me see if I can do a diagram of it on here real quick.

AMP
\/ \/
| |
| |
| |
/\ /\
Headunit

Or

AMP
\/ \/
| |
| |
| |
Headunit

If this is right all I basically do is tap this yellow wire into a power supply and I'm good to go? Or do I splice into anything with those grey/black, solid grey, white/black, solid whites again?

 

[NSX2398]

So I did my stereo upgrade about 4 years ago. I did aftermarket speakers and subwoofer but kept the OEM headunit.

Did you also put in an amp? I'm not sure I've heard of anyone putting in aftermarket speakers and sub without getting rid of the BOSE amps at the same time because it's nearly always the amps that go not the speakers.. but it's certainly do-able.

I did some work on this cf center console and decided to put my single din headunit in finally that's been laying around. The only problem is I forget how I wired things a little. I thought I read a while back it's easy because I used the SOS aftermarket to OEM stereo harness so here goes my question.

SOS has 3 harnesses .. which one are you talking about?

I have a new harness for honda aftermarket. It plugs into my factory harness and has wires on the end. On the SOS harness that's for the OEM headunit it has 2 RCA's that I had a Y cable on because the OEM headunit only controls front and rear. So I believe I put my fronts as the speaker components and the rear was the bridged subwoofer if that makes sense.

I have the SOS harness that works with an aftermarket amp and I'm pretty sure that the RCA connectors are the Left and Right channel output from the head unit that go to the amp. I have no idea why you'd have a Y cable on them. Contrary to your other statement, the OEM head unit does not control front and rear .. only left and right. The one rear speaker (by the drivers right elbow) is driven by the amp that also does the sub and is just a mix of left and right channel.

The confusing part that I forget why it worked was that on the SOS harness itself I spliced in wires. I did 5 total. Solid blue=power supply, Grey/black= Right front Neg, Solid grey=right front positive, white/black=left front Neg, and solid white=left front positive.

I removed the SOS harness but for some reason don't know if I can just plug my RCA's in directly to the headunit? If this is the case I need 2 more Y connections right? Let me see if I can do a diagram of it on here real quick.

AMP
\/ \/
| |
| |
| |
/\ /\
Headunit

Or

AMP
\/ \/
| |
| |
| |
Headunit

If this is right all I basically do is tap this yellow wire into a power supply and I'm good to go? Or do I splice into anything with those grey/black, solid grey, white/black, solid whites again?

 

[Stephen@NCAutoUSA]

Did you also put in an amp? I'm not sure I've heard of anyone putting in aftermarket speakers and sub without getting rid of the BOSE amps at the same time because it's nearly always the amps that go not the speakers.. but it's certainly do-able.

SOS has 3 harnesses .. which one are you talking about?

I have the SOS harness that works with an aftermarket amp and I'm pretty sure that the RCA connectors are the Left and Right channel output from the head unit that go to the amp. I have no idea why you'd have a Y cable on them. Contrary to your other statement, the OEM head unit does not control front and rear .. only left and right. The one rear speaker (by the drivers right elbow) is driven by the amp that also does the sub and is just a mix of left and right channel.

The SOS harness I had in before was their OEM headunit to aftermarket speaker setup. I think I figured it out now, the wiring part at least.

I forgot really what if it was front and rear or left and right for the OEM headunit. I knew it was one of them but forgot which.

So right now I think I have the speaker wiring figured out. It's hard to explain because I really forget why I did things a certain way.

The next thing is the power. Again I don't know why I did this but I read it somewhere on prime a LONG time ago. With the previous setup I have this blue wire running from my amp "Remote" and had it taped into another blue wire off the SOS harness that said "power antenna". Now that power antenna I believe is an ignition power supply right? Therefore on my new alpine headunit the small harness that plugs into the headunit has a blue line that says 'power antenna' as well. I assume that's my ignition one I'll just connect with my other power antenna one?

The ground I just ground and the yellow fused one I just connect directly to an "always on" power supply right?

 

[Stephen@NCAutoUSA]

NM I got it to work. I can't believe I spent the last few hours trying to figure out something that could have been done with 1 phone call and reading the fine print on the headunits wire....