1974 Dash Harness

I also have a 74 duster,the little beige box is the 1st year that plymouth put an interlocking seatbelt module, if youuse the module you have to either put wiring back to seats ,if you remove module, it controls 11 other items like dome light,dashlights,cigarette lighter,glovebox light, and some other items, look at the 11 pin connector that hooks to gauge cluster and you will see double wire going to each pin, if you still have reset button that was next to windshield washer box on fender you can cut the yellow wires and wire them together to bypass the module, also Canada and Venezuela didn't have seatbelt laws so if you find the module in green from Canada or orange from Venezuela they have the bypass built in the module, mopar realized they made a mistake and done away with the modules in late 75 models and completely gone in 1976