to solder or not to solder

[Monkey]

so other than ease as i dont tend to take the motor out unless there is a problem id never taken my 9l out other than a couple of time to clean the car then the electronics go with it anyway

would it be ok to chop of the connectors and solder as im from the UK and dont now of any where thet sells 5.5mm connectors and it would meen another few weeks before i could run my car :(