Installing a Pioneer Bluetooth stereo and speakers in my BMW Z3 Roadster - Tips Tricks and How to! 

Budget install! Dirt Cheap! Here are the amazon links to the stereo gear I installed.
Antenna adapter amzn.to/2N2zTuJ
Rockford Fosgate 5.25 component speakers for the doors amzn.to/3oE8JYJ
Rockford Fosgate 4 inch 2 way speakers I used behind the seats amzn.to/38E4Cq1
Rockford Fosgate 5.25 2 way speakers I should have used behind the seats amzn.to/3suiJq2
Pioneer MVH-S310BT - Blue led amzn.to/39rfdUz
Pioneer MVH-S320BT - Red led amzn.to/3bxuEgH
I installed the MVH-s215BT red led but it's no longer available. I believe the 320bt replaces it.