Solderless connectors are just that...solderless. In a quick glance of terminal manufactures' installation requirements, I didn't find any that recommended soldering. In fact, none even made mentioned soldering for their solderless terminals.
Buy tools from reputable suppliers and only use the terminals the tool was designed for. Greenlee is one of those companies. The tool I use is CSA certified, which is what the terminal lub manufacture's require.
Vibration control is impossible with anything that moves, especially when vibration isolators are used. You can and should mitigate vibration when it comes to all wiring.
SAE standards are designed for the automotive industry and take into consideration the extreme temperatures in an engine room. For wiring going through high temperature environments, the SAE recommendations may be appropriate. Outside your engine room, SAE recommendations may be overkill. As I've said before, I favor marine requirements for undercarriage wiring. The marine recommendations put more focus on harsh physical environments.
Unlike one poster, with training, the right tools, and adequate skills, wiring projects don't have to left to the professionals. Some professionals' work is not up to standards, as has pointed out earlier. Poor wiring can kill, so I would not recommend you take on electrical work unless you feel up to the task at hand, especially with high current systems. Keep in mind, 500ma can be lethal, so all electricala projects must be taken on with that concern.
99 Country Coach
Prevost XL 45 Conversion