While changing the (Chevy P30) chassis battery on my '97 Adventurer, I checked and found there's a 600mA draw on the system. Pulling fuses I found that it is occurring on the Horn/DL circuit. These wiring diagrams are confusing to trace. Can anyone tell me what else is on that fuse besides the horn and dome light that might be sucking juice?
Okay, nevermind. It turns out the excessive current draw was from the memory wire on the new stereo I had installed. I would have expected a company like Nakamichi (marked only on the manual, not the unit or box) to do better than this. I'll have to find another one that has a more normal memory wire current (just a few mA or less, maybe even just a few uA).
According to my VOM, it starts out at around 4mA for a few seconds then climbs to 600. I haven't rechecked that yet when turning on Acc. power and booting up Android, but with with the radio's main power switched to house batteries the chassis battery still goes down over a weekend's use, implying it's still drawing a half amp of memory power.
BTW, why would anyone put a smaller wire on main power than memory (seen it myself as sell as seeing others comment on it)?
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