my rabbit would leak into the starter relay and fuel pump relay and fill them up - heard that some rabbits used to start up all by themselves. Nasty if you were in gear when you park - no safety interlock on the clutch in those days.
Charge up the battery and see how long it takes - it may be ok and was drained by a short under the dash.
Got some cables, I guess the leak shorted out the battery, now I need to figure out the leak, was told it go be getting in through the cowl, which I guess is the word for what I was trying to describe. Still have the iacv issue!