Car Electronics Question
Posted 14 March 2006 - 03:28 AM
However, to get a constant 12v+ line for the headunit (the old one didn't have constant power), I had to steal it from the cigarette lighter. Which means my cigarette lighter now doesn't work.
I don't really use it, but I would like to have it there incase I need it. So my question is, how can I do this? The instructions for the headunit explicity stated that the power line going to the headunit shouldn't be tapped into to power anything else, so the current rating of the wire isn't exceeded, causing overheating and DEATH.
So can I trace the line back and split it somewhere where it's safe to do so, or is this not possible (ie. it goes back to the fuse box, and it's not worth the effort?). Or can I tap into the wire without worry?
Keep in mind I'm an electronics noob.
Car is a 1981 Mazda 626.
Posted 14 March 2006 - 11:09 PM
Posted 15 March 2006 - 07:04 PM
But thats my advice
Posted 28 March 2006 - 09:40 PM
|QUOTE (millermagic @ Mar 15 2006, 09:09)|
|The headunit only need power when you intent to use it, either while the car is running or in acc mode.|
Dude, how do you think it remembers all your settings and such? That's right, constant power. Any headunit with any kind of memory function needs a constant power line to remember all your sh*t.
Go unplug your headunit and see if it remembers all your stations and settings.
(Sorry for bump. And I don't really care anymore. I've been doing fine with the cig lighter. Just wanted to correct miller.)
Posted 29 March 2006 - 12:24 AM
Also consider a 'fusable link' if you fear wire meltdown. In a safe spot near the start of your power connection, splice in a half inch or so of wire a couple gauges smaller. If there is a problem, that small section will melt apart, and the current flow will stop.
Edit. Of course, after I post, I see that this is an old thread and already solved. lol
Posted 02 April 2006 - 01:54 PM
As for your headunit, anychance you could use the the non constant power cable for your stock unit. But that's just a random stab in the dark.
Posted 04 April 2006 - 11:48 AM
|QUOTE (stretch. @ Apr 2 2006, 23:54)|
| As for your headunit, anychance you could use the the non constant power cable for your stock unit. But that's just a random stab in the dark.|
Car is from '81, the stock headunit didn't have constant power. It's old school.
Thanks for the replies though. If I ever get around to pulling my dash apart again I'll probably just hook the cigarette lighter up to the same wire and see if I can't blow a fuse.
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