Has anyone heard or seen an adapter / plug for connecting to the factory 4 pin plug that normally connects to the back of the becker radio on a w124 500E (1992)?

I think there is a ground, power 12v and switched 12v wire in that harness. I would love to connect to it if there is a simple connector 3-4 pin available.

The only male-female I have seen is the unit on the back of the ashtray that has power, ground and illumination. That plug would work nicely and i could transfer the existing wires with the factory pin-sockets on it to the new connector. Just don't know where to get the connectors. I checked at the local wrecking yard but found nothing.

Thanks for any help,

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Bryan Harter
1992 500E Smoke Silver
2002 CLK55 AMG Cab Silver/Black
2001 Harley Fatboy - Pearl White
2004 F150 FX4 Silver/Grey
1969 GTO Liberty Blue
1956 F100 Black