Sooo.. 
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I was wondering, is there a relay someplace that manages main bus power to high draw areas?
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I started up my 90' mulitvan to warm up the other day and as usual popped on my park lights & walked away while it idled.� I came back 5 or so minutes later and took off for work & flipped the headlights on.� I noticed that it was mighty dim so I stopped and checked, sure enough no lights.� I hopped back in and notice I had no heater blowers either, so I tried the rest of the electrical and had no wipers or A/C blower.� All the low draw items worked ~ horn, interior lights, running lights, door locks and pwr windows.
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I was wondering what say the masses on this ghost in the machine?
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It was like this until I shutdown / restarted and hasnt come back since.
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Thanks in advance,
Brian