I suppose, my reply could be taken wrong.

I doubt 6.6V would kill an 8411. Using it in a situation where it was underpowered killed it, ie "burned it up".

Roger, I tried using the e-brake in my 86, but I could not get the lines as "short as possible" because of where I wanted to place the thing. I went NUTS trying to find out why the brake wouldn't work, but alas, when I made EVERY connection uber short, it worked great.