Ignition/starter /accessories switch boxes.... Any ideas welcomed...

4574 qualityswitch options:
http://www.alliedelec.com/sensors-switches-relays/switches/
My one preference is for one of these:
http://www.alliedelec.com/switches/toggle/?navigation=4294852606-4294853202
Not inexpensive, but sealed and extremely unlikely to fail.

1646 enclosure options:
http://www.alliedelec.com/enclosures-racks-cabinets/electronic-enclosure/