ABYC frowns on the use of friction connectors (aka blade and bullet connectors). Essentially Friction connectors (the blade and bullet variety) are allowed, provided they resist a 6-pound pull.
Many engine sensors use blade connectors. Since the engine a pretty good source of vibration, is there a good method to prevent these blade connectors from loosening over time?
I've seen instances where wires are soldered to the directly to the blades - such as speaker connections.
Are connections like these preferable if there are soldered to the spade connections?