hello all been awhile .. i have a question about alts i have 3 alts 2 for system the other powers the van. its a mecury/toyota van. yes mecury /toyota they called it mercury villager but made by toyota. im using chevy small case alts..they charge fine i only use the one wire off of them the sence wire. i dont use the dummy light wire.. now i was told that buy doing this alt.it would not draw power with sence wire connected to audio batterys . ive had many people argue the fact it does not draw power.. ook well this eve i was standing by my van and could here a slight wine.. i opened hood and related it to the alt sound was clearly from alt . second the alt is warm just setting there i know this cant be rite alt should not be warm when it hasnt ran all dayPlus it created a slight noise threw my front stage speakers which dont run off of the same alts, runs off van power front stage if i un hook the sence wire to audio batts it stops the speaker nosise. its a gm alt battery wire and 2 wires on top plug in. one is grey and the other if i remember rite was white.. the alts are for a chevy cavalier but bolted to my van nicely without much fabrication.. so my questions are why does alt whine when not being used and why does it get warm when setting, no driving.. have i got a wire messed up some wheres ive checked and re checked. any help greatly appreciated. thank you.