Dear Richard
As already mentioned by other members, be aware that lead red/yellow is hot all the time and is a NON FUSEED circuit, so you can do a lot of damage to wiring if that pin touches ground accidentally.
Here after just for your reference a photo of how the pins should be arranged inside the 4 pin female bakelite connector.
The connector shown is an early style with screws, but you can of course use a newer one model with same number of pins or in the worst case scenario buy a 6 pin connector housing and play with pin position inside.
Best regards
Eng.Leonardo Peterssen
Www.wiredoktor.com