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1994 buick regal OBD 1

I have a 1994 Buick Regal 3.8 L, the problem i am having is the ABS and brake lights are on and i can’t find a scan tool that will adapt to my data connector (4 pin). I can not retrieve or clear codes. thanks for any help you can provide. Dillard

If you

Pull the battery leads and keep them off overnight, the codes will be temporarily cleared until they come back on again.

thanks, i disconnected for two days light is still on.