[M31]

Originally Posted by Bruce Wayne

+1

Also the Boxster alarm system has a small contact switch located to the left side of the radio compartment that detects removal of the radio. In order to prevent the alarm from repeatedly going off, you need to connect this wire (brown / blue) to ground.

As an audiophile, i find the Becker CDR-22 fitted in mine as standard perfectly acceptable

Here's a picture of that pesky little contact switch...