I just got an MD player to install in my car (99 Si). But I want to retain my factory CD player... Is this possible?

Is there a switch or splitter or something to do this? I already purchased the harness for the MD.

 

Splice the MD wires into the stock deck's harness.

Or if you don't want to cut into the stock harness visit a sound shop and ask for a Honda keyless entry harness. It should look like a stock female plug with wires going into a stock male connector for the stock deck and another set for the aftermarket harness.

 

no, that will not work. the cd player is not a standalone, you need the factory headunit to control it.

 

But what if both units turn on by accident??

 

Could u give more info on the actual player? Someone said it's not standalone, but from your response it sounds like it is.

Anyways, the info given about splicing into the stock deck is great to run both units, but if these are two different head units, you will run into major problems...especially with output

 

My MD deck is a standalone head unit (Sony Xplode)... So I don't want both to be on at the same time by accident...

Someone suggested an externally mounted switch (on the ignition wire)... Any other solutions?

 

um...your going to need more than that, because how will you output to speakers? I'm pretty sure you can't splice them into the same wire, you'll blow the output channel of the deck that's currently off with the one that is on.

I think your only going to give yourself headaches with two head units in the same car.

 

You could do it with a few relays.
If your really interested e-mail me I can try to put a wiring diagram together for you. You will have to be patient though, I am very busy at work.

I have a few questions, are you using deck power or the RCA's be specific.



[Modified by nsxxtreme, 3:37 AM 2/5/2002]

 

go and buy a switching device from your local audio store, they make them,and it controls the power for which headunit you want to use. my suggestion is to let them wire if for you

 

I really think you could do it. A friend has 2 head units in his Eclipse...not too sure how they're wired though.

If one has an input on it you could do it that way. The head units don't draw a whole lot of power, especially if you don't use the built in amps. I'm sure there's plenty of extra capacity to run 2 head units from the same lead. If there isn't, you could always run another wire to the fuse box...there's often some auxiliary connections there. With the power/ground/clock wires...it shouldn't matter that they're connected to 2 things...the voltage will remain at 12 and the head units will still draw up to their stated resistance (you won't blow them up).

I think if you connected the same speakers to both units you'd have some problems. You'd have to connect the speakers to only 1 head unit.

You could do this: connect the Stock CD player to one of those RF devices using line output converters (speaker to RCA) and use the MD to run the speakers and/or amps...that way you could use the stock deck's CD player. Or you could do it vice versa...no line converters needed BUT the amps aren't as good.





[Modified by Stephen, 9:00 AM 2/8/2002]

 

4 dpdt relays and one IC containing nand gates to be exact.
Still waiting on a response from the last e-mail I sent you.

 

You don't need relays, just splice them in.

I have the same exact setup on my beater, a stock CD player from a Type R and a Sony MDX-8050. The Honda harness and the Sony harness have the same wires wired to the matching wire on the female Mazda connector. The setup is using the HU's speaker outs.

Both units are powered although only one can be turned on at a time. If one is on and you turn the other one on either the fuse for the radio blows or the deck that was previously on turns off. The internal amps on either HU are not shorted with the speaker outputs mated.

Note that this is my experience with a stock HU and an aftermarket HU. If you want to be on the safe side wire diodes into the power wires of one of the HU's harnesses.

 

forget it, too much of a hassle to install, and even just to use. pick one and stick with it. its actually pretty poitnless. its like haveing 2 cd players.. why would u need 2 cd players.. you dont.

 

What are the diodes going to do? All a diode does is not allow current to flow in the opposite direction.
I wouldn't risk wiring them together. There is so much that is wrong about this, electrically.


[Modified by nsxxtreme, 5:32 AM 2/9/2002]

 

Someone has a large collection of MD's?

It's a matter of convenience.. some people like myself enjoy the challenges of working on "unsolvable" problems.


[Modified by redblues, 8:01 AM 2/9/2002]

 

Oops, thanks for pointing that out, wrong wires, diode used for two HU's on the amp turn on leads, not power wires.


[Modified by redblues, 8:00 AM 2/9/2002]

 

This is not unsolveable. Its actually very simple, with the process I mentioned above.