Older style wiring C961 to c961 new 5 pin waterproof conversion

Reg0001

Just Joined
Apr 2, 2017
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Nofixedabode
Its been a long time since i have visited as my BBS01B installation has worked flawlessly since installation.
The C961 display control button has now started to play up due to wear and I need to replace but all new replacements now have the waterproof 5 pin connectors.
Problem
What is the neatest and best way of connecting older style C961 wiring to the newer 5 pin waterproof connector?

I could splice all the wires but i dont know if i am unaware or have not thought of an obvious solution