If u look in the engine bay the abs module sits on the passenger side firewall under the cooland reservoir. Its easy to spot with all the brake lines running in it. A non-abs will just have a rectangular valve. Check to see if the abs is working tho, the light should turn on then off when u turn on the ignition. If it stays on = throwing an error code or if it doesnt turn on at all then the warning light is unplugged. FYI abs modules are prone to breaking simply due to the age of the thing.
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