coutch Report post Posted November 1, 2009 I have a 1999 National Seaview on a F550 Ford chassis. The blower motor works on low, medium but not on high. The owners guide shows there is a fuse 15A for blower relay coil and in the power fuse box 40A Blower notor relay contacts. Before I take things apart I would like some direction or is there a relay or module on the blower? Thanks for any help, Coutch Share this post Link to post Share on other sites