Newbs: Some power/inverter/relay/remote start ideas
Here is my situation:
I have a P2-266 that I turned/am turning into a carputer. It has a whopping 128 megs of ram (in 32 pin memory....so not bad at all). I wanted to originally instal win 98 on it, however I remembered 98 requires a keyboard be plugged in to boot, and I did not want a keyboard in my car. So, I installed 2000pro. I had a problem though. The computer does not turn off when I tell it to shut down. That was a problem with my plan of running a relay off of a fan header.
So, here is my solution:
I bought an inverter. I don't have the money to buy a 12v PSU. My 500 watt inverter was $30. I WISH I had the knowledge to convert an ATX PSU to 12v, but I'd have to have a step by step tutorial (the soldering I could do, reading the schematics and figuring them out I could not). So, what I'll be doing with my relay is the following:
I have a remote start, so want to boot remotely. My mobo DOES support power on when power is restored. I am going to have a relay on my inverter to turn it on and off. No new ideas. But, to get power to the relay, I am going to have 2 sources of power. One will be a wire running from the relay/fuse to the ECU, one from the amp's voltage detector from the head unit (but I don't know how much current that will supply, so don't know if that will work). Each will have a diode on it. Running a line from the ECU lets me start any time the engine is running, which lets me easily get the power with my remote start. The wire from the stereo to the amp will HOPEFULLY let me listen to music with the key turned back only. Unfortunately, shutdown is a bit of a problem. I am having to shut down manually each time before I cut power (so I don't have to worry about windows becoming ****y losing power all the time). Sure, it is merely a matter of remembering to press the right button, but still, I'd rather not have to do that.
As for sound, I don't know what to do. I used an FM modulator in a test run this past weekend. It sounded like crap, and was a pain if you went in an area that had a radio station on that channel. I have an amp, but my head unit is plugged in. Anybody know if it will be a problem to hook the audio of the comp up to the amp along WITH the head unit using an rca splitter/combiner?
Also, what is the max current I should think about drawing from an 8 gauge wire hooked to the battery that is about 10 feet long?