As Gilly asked whether or not, does the sensor light come on while the wheels are being turned-no. But I think I have noticed that the sensor has tripped while going over a bumper or two. Could you tell me what this means?

The rear sensor to the diff is the only one I haven't ohmed yet, since I wanted to avoid removing the rear seat.

To answer the last posted question, the connectors for the ABS to the front wheels are located in front of the battery area , in front of the partitioned firewall. It is set in a clip holder with the two front leads secured in place.

Thanks for any more additional help.