I mounted the GPS antenna for my Hualingan on the speaker grill in the top right corner of the dash. With all that black dash it blends in well, out of sight out of mind.

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2002 X5 4.6is
1999 C5 Corvette
1992 Mitsubishi 3000GT VR-4
1994 Kawasaki ZX-9R
2005 Mazda 6 Wagon (Wife's)
1991 Mitsubishi 3000GT VR-4