Headunit Brackets
 

Sup all. First off big thanks to Sir Nuke for the wiring, was a big help. Second thing. I recently installed a single unit into my protege, not sure which modle but its the SP20 one, only its not SP20, if u get wot i mean. newayz, yeah so the stock unit was a double, as in it took up the 2 slots, but my new one, JVC 405, is only a single slot one. Any tips on how to secure it in better, coz with my car, theres no side frames or anything for the new unit to sit on/in and i cant like the new units plate in, so yeah, its pretty easy to lift out n steal, which sucks.
So yeah, if anyone out there had the same problem, some solutions would be a kick ass help.

umm... make sure your sleeve bites in hard??? aside from that, you can try putting a rubber-nub on the back of your deck to slide into the strap back there similar to the stock one.