What causes F 250 Ford super duty abs light to stay on?

Answer 1

i have noticed that some of the fords have second ignition wires and if this wire is not powered through the start process and remains powered while running . the abs light will come on . this can be checked with a dmm (digital multimeter ) . i have experienced this doing automatic remote starters in fords . if you are not familiar with using a multimeter (do Not Use a test light) take your truck to someone who does i think most fords are white with pink wire at ignition harness under dash. verify the wire first .

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In my case the ABS light came on and stayed on and the first ABS fuse that I

checked was not installed all the way . I touched the fuse with my finger , heard

a click , and the ABS light went out ( just lucky I guess , but still suspicious of how

that could have happened )