P38 crash sensor question

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Ok should the yellow plug on the passenger side have continuity with the drivers plug and what colour is the plug going from the srs ECU to the becm
Hi the state of play today with my srs is al srs cables good continuity except small connector under seat black ok both sides brown and green nothing and brown and black nothing all checks back to ECU connector
Is the red plug on the on the rotary coupler have a 12volt feed when it's all connected up but don't connect up air bags.The same at the passenger side connection