possible to install 2 Decks in one car?

Can you, yes. But why? Just to keep a stupid blinking light?

-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

auex]C wrote:

---

n you, yes. But why? Just to keep a stupid blinking light?

---

I think what he means is that the keyless entry system or the alarm for this car is built in to the head-unit. At least that's what I have heard.

Nope, it is 96-98 that have the keyless entry built into the radio.

-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

You will need to switch the deck power or ground. You will have to turn off 1 deck for the other to work. I found it best to wire a toggle switch into the ground side to switch decks without issues.

I like to ground switch. In my buisness you see just what happens when you power switch. Ford loves to do that and eat up fan switches and headlight switches.

-------------

hey sandt38, I think You understand what Im trying to do, but what do you mean by switching the power or ground? I didn't know you can only run one deck at a time, but i'll figure out how to toggle into the ground wire to switch decks. Im just gonna connect the original plug into the OEM deck which has the alarm on it not the power locks. Then strip the original plug and wire it with the matching wires from the JVC deck. Hopefully this works. The only thing that I have to look into is spliting the ground wires and get a new connection to plug into the JVC and the original ground into the OEM.

Use a 3 terminal rocker or toggle switch. On 1 in, run ground, on each of the others run the ground out to each deck. This will allow you to switch the unwanted deck off entirely while the other is running. As long as you are careful, you can avoid adding the in-line toggle, but if someone else gets in your car, you never know... you know?

-------------

Just curious, why are you keeping your oem deck also?

He believes factory security runs through the radio. The only security that the radio has is to flash a light and have a code to turn back on after being powered down. This is why I understood he wants the factory radio.

-------------
Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

if you want to keep your oem functional also, so that you can listen to both, then please take the time to make a proper switching system. the reason is that you can end up frying one or both of them if the speaker outputs are just simply split between the 2 of them. there should be 8 speaker wires coming from the back of each deck and each of them need to be isolated using a 5 wire (reverse polarity) setup using a spdt relay for each of the 8 wires. or, to save on space and the cost of relays, use 2 of these:

https://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F002%5F013%5F000&product%5fid=275%2D214

it's a bit tedious, but definately the only way to go if you have to have both of the decks functioning.

good luck!

Well, there may be another way. If you plan on using a amp to power your speakers, you could use an automatic audio switcher like this one. You would also need a line output converter to get your OEM headunit's audio signal to the amp. But this would only apply if you are going to be using an amp to power your speakers.

-------------
Duane...

If you think you're confused, imagine how you feel.   

Wow thats amazing. Good luck with your project

Wow thats amazing. Good luck with your project

jimmeezgolfvr6, I do intend to use both decks, just not a the same time, The JVC I'll use to listen to mp3s + radio and the OEM is for the red blinking light and also for the factory alarm, its not a REAL alarm but u guys probobly hear the horn go off consistantly if you open the doors without the keyless remote or key. Anyway, I just need to switch to the OEM deck for the anit theft device when I park at night or whenever I need to for a lil security.

jimmeezgolfvr6, thanks for the advice, so you are saying I can use the 2 decks at the same time without conflict or do I still have to manually switch between the 2.     (personally, I rather just have both working at the same time to eliminate the hassel.)
thanks

you can use the remote turn-on wire from the jvc deck to trigger the relays. you can wire your oem deck's speaker outputs to normally closed on the relays, and have the jvc's speaker outputs on normally open. that way, when you turn on the jvc deck, the speaker outputs of your oem deck will be isolated. you can even leave that oem deck on but you won't hear sound from it. then when you turn off the jvc deck, the relays will switch back so that you will hear sound from the oem deck. if you're planning on using the 8 spdt relays, here's what each relay will look like:

#86 = remote turn-on from jvc
#85 = ground
#87 = 1 speaker output from jvc
#87a = 1 speaker output from oem deck
#30 = 1 speaker wire leading towards speaker

if your need for the oem deck though is to have the flashing light though, you can save yourself a ton of trouble and just connect constant +12v, +accessory, illumination, and ground to it and be done. just make sure you disconnect everything else to it.

good luck!