Been getting this annoying tap tap tap rattle at between 2 and 3k rpm. Though it sounded like it was coming from the A pillar. Have added the gauge pod there, so I though the screws were poking through the trim too far and hitting the inside of the pillar.
Sunday removed the trim and filed down the protruding screws. Still just as bad. Wednesday, took the screws out and trimmed them down with a dremel and refitted them, one by one. Bugger still as bad, then I opened the door, and the sound was coming from the door as well as the pillar. Checked the hinges and fitting, all solid. Fished arround in the door bin, and found my ice scraper. Put it in the glove. Instant rattle gone. I have lived with this for weeks trying to work what was loose and knocking. It was so loud it drowned out the radio at motorway speeds unless you really wound it up.
Thank f*ck it is sorted now. The other one behind the dash was even easier. The sprung metal plate ontop of the ashtray had sagged a little and bending it up further tensioned the spring further and that stopped it buzzing.