You should be able to find something in the charger cirquit (regulator)... or build something around the system that makes your "alternator"-light go off when the engine runs...
i was wondering is there a wire that is only on, when the Engine is on. Not the ACC wire as that can be on when the engine is off. I want a wire that is only live when the engine is actually working. Something like the IGN wire or thereabouts, so I can hook up a relay safely to it.
2004 Toyota MR2
Modified Intel Xeon E5450 3Ghz Quad Core 2GB RAM 160GB SSD M4ATX Xenarc 700TSV TS Toslink Audio BU353 DiNovo Mini Car2PC ODBII Bluetooth HF 16x2 Character LCD
Depends on the vehilce, newer ones have a dozen or more fuses or relays that have power in the run section. The SUV body based off my truck has a rear defroster that gets power on run only and since I don't have a rear defroster i tapped off of there.
Try the accessory power vs the cigarette lighter... I have a jeep liberty which has a cigarette lighter which is switched (hot when ignition is on) and the accessory connector (spare cigarette socket for running accessories like powered pump etc) which is hot all the time.
06 Volvo XC90
Use to have installed MII 10000/512Mb/40GB, Lilliput 7", OPUS 90W, Wifi-G PCMCIA, Head Unit Aux adapter, Delorme GPS, XM PCR, Audigy NX, RR
Car PC downloads: http://carpc.harteveldt.com/