Problem solved. The blower regulator made it work again. Now, the blower won't shut off. All the buttons on the PBU work, as does the temp. wheel, but when turned off, it blows on low. I think it's outside air being blown in when off. It's definitely the blower forcing air in, not just when moving down the road.
Thanks
David

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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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