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Old 12-06-2006, 08:12 AM   #1
GB33
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Default Why 5v? Why?

I received my car dock (very quickly) and was taking a look at all of my options in my car (1996 Accord). This is where I get frustrated. I have tried P-n-P's before, but I just don't like having a dock sticking out looking out of place and wires and crap. I have always just used my Kenwood HU and tuner under the seat. So I first need to get used to that. But in my other installs I used an extra 12v turn on that my HU has for power that came on with the HU to the p-n-p. But with this stupid 5v deal I have to "make" a new cig plug back behind my Hu I guess. I do not want wires going to lighter. Why oh why did they do this. And to find a "descent" place to mount that doesnt stick out like a sore thumb is no fun either.

Also did anyone notice in back of car kit manual it says voltage range is 10-16VDC? The cig plug is clearly labeled at 5v though. Dare I try 12v?
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Old 12-06-2006, 09:18 AM   #2
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Why they did this is simple, the unit runs much cooler being only 5 volt. Come on is this really that big of a deal? XM has been using 6 to 5 volts since their first tuner was introduced. Also the 10 to 16 VDC is the range at which automobile batteries/alternator's put out. This is just telling you that is the range in which it will work, but the cig plug in on the unit has step down circuitry to lower the volts to 5 volts. Plug it in directly to 12 volts without the cig plug and you'll fry it. It took me every bit of about 5 minutes to run me a hidden cig plug under my dash. This is no big deal unless you chose to make it so.
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Old 12-06-2006, 09:21 AM   #3
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I think GB is confused.
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Old 12-06-2006, 12:10 PM   #4
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No I am not confused, and it is also not "that big of a deal". As I said I am going to wire up a cig lighter behind the dash, it's just that much easier if I didn't have to go buy one and do it. But i guess this way I won't have to cut up the cig lighter transfomer. I am quite crafty and handy, like I said no this is not that big of a deal. I just didn't feel like going to get one.
I do get it that the cig plug transformer is what takes the 10-16v, it just reads a bit like the unit itself has that power range. Sorry. But still mounting these (or any p-n-p) is just odd to me as I am not used to having something seperate. Also don't want something unsightly nor a big theft target. I wish the screen read-out could be flipped horizontally for the mounting option.
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Old 12-06-2006, 12:24 PM   #5
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"No I am not confused, and it is also not "that big of a deal". As I said I am going to wire up a cig lighter behind the dash, it's just that much easier if I didn't have to go buy one and do it."

Yes, MOST THINGS require you to actually have to GET UP AND DO IT. I mean for real, tell me you are NOT talking about wiring a $5 part to the fuse box and stuffing it behind the glove box.

Tell me I'm missing something cause you'd be done by now if this is the case.
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Old 12-06-2006, 12:39 PM   #6
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Surely you feel better about yourself now. I mean tell me I'm missing something here. You made a comment, I responded, and now you make jokes at my expense. I mean surely you feel much "tougher" now. You win big guy. Oh and the got hump thing, extremely not funny, in fact quite dumb. Good day.
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Old 12-06-2006, 01:00 PM   #7
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Come on man. Unless you live at the artic circle they have this part available everywhere for under $10. YANK fuse, shove in wire, connect, shove behind glove box.

It CAN'T be any easier. If the "expert" children of Best buy can do it no problem then you can to!
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Old 12-06-2006, 01:04 PM   #8
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Come on man, I never said it was a problem. just wanted to complain a bit because it is just one more damn thing to do to get this thing in the car. That is all I was saying, and was wondering why they went to 5v. I got a respectable reply for that. I CAN DO IT, I WILL DO IT, just didn't WANT to have to do yet another step. Thats all.
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Old 12-06-2006, 08:37 PM   #9
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It is kinda a pisser if you are swapping out a receiver and were already wired for 12v. Granted it is not the end of the world.
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Old 12-06-2006, 10:06 PM   #10
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Quote:
Originally Posted by BootsC5
It is kinda a pisser if you are swapping out a receiver and were already wired for 12v. Granted it is not the end of the world.
Agreed, but I think going forward, we can look for all new tuners to be 5 volt. Just like dock, antenna and power connectors, the voltage of these tuners need to be standardized. I think that has indeed finally happened.
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Old 12-08-2006, 04:50 PM   #11
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Most electronics tend to run at either 5 volts, or 3.3 volts (if really low powered). In almost all cases, you will find either a switching or linear regulator built in to take the 11+ volts down to 5 or 3.3 volts. Five volts also happens to be USB voltage, and consequently, companies are starting to assume that this (regulated) voltage can be available. Thusly, they remove the regulator from inside the actual unit, which reduces the size of the unit, removes heat, and actually can allow it to potentially survive an event that might have taken it out, but now only took out the cigarette lighter plug.

I am using a Sharp regulator with an extra on/off pin that is tied to the acc power, and a manual switch, using diodes to keep the two power sources separate. Its nice to have the extra pin so you can use a single always on line for power, rather than running larger gauge wire from two different places, and go through the switch.
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