so after the show yesterday nite...i shoke my bass...and realise there's smtn inside the cavity knockind around...I was afraid that the electronic parts broke off or went loose after i jumped around on stage. After unscrewing the pickguard..and to realise the extra object...

A screw from duno wher caught inside the cavity during production lol

Oooh...tis looks interesting :)

The aluminium foil layer was said to help reduce...electronic Noise...

This is how my onboard preamp looks like..no idea...

seymour duncan's wiring diagram...which looks very different..from the made in china OLP

and here my new Fender/Schaller Straplock made in germany
cost Rm40 a pair

Its quite handy...wen u hav a leather strap