Generally the 4 pins are + - Video and Audio (Hopefully it's not a digital comm line)
The RCA are Ground and Video.. Ground and Audio (Signal ground.. generally also negative)
The solution is to identify the 4 pins on the camera and make an adapter
Ground goes to both RCA jacks and to chassis ground (negative)
Positive to the power lead (often red but do not trust colors)
If you mix up audio and video you will HEAR a BUZZ.. and see not much.. So you can then simply swap 'em.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times