I have the same problem. Also, there is nothing up on the roof to which the magnet will stick! So, I just temporarily run it out the door and throw the satellite antenna up on the roof. works fine. The dood doesn't shut tight enough to harm the wire. Not elagant but it works.
2018 F250 Lariat 6.2 4X4 w 4.30s, 2018 Wildcat 29RLX
2012 BMW G650GS, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs