Sideways7

iTrader: (7)

I'm trying to get a speed sensor set up on a front wheel on my '91 for traction control. I will be using a hall-effect sensor, but I'd like to know how the factory routed the wiring on the original ABS sensor. Does anyone have a picture of how this works?

Bonus - if anyone has an ABS tone ring (the part that mounts behind the front wheel hub) I'd be happy to buy it off of them.

Turbonut

iTrader: (1)

This is from the '91 TII I have sitting in the pole shed, minus eng/trans. Large, but the wiring coming in from R/F wheel rear of shock tower, then goes forward over R/F fender through white clip, over a/c line into large wiring harness, then to front across radiator, up left side.
Last photo, loop is the L/F sensor going into the wiring harness, then into the firewall.

Hopefully this will help, need anything, reach out.

Sideways7

iTrader: (7)

That's exactly what I needed! Thanks for the quick reply.

Sideways7

iTrader: (7)

Do you have pictures of where it mounts to the wheel hub? From the FSM it looks like it mounts through the caliper mounting bracket, but mine don't have a hole and I don't show a different part number for the ABS equipped cars.

Turbonut

iTrader: (1)

Easy, when I got the '91TII back in 2000, I didn't want the car to rest on the suspension, so I removed it and placed it under the car.
As you can see, the sensor goes through the knuckle:

Sideways7

iTrader: (7)

Thank again! Looks like a custom bracket is in my future.

Turbonut

iTrader: (1)

Going to be a job as the sensor spec is only .4-1.0mm clearance.

Sideways7

iTrader: (7)

I'm going to be using a threaded hall effect sensor and a custom trigger wheel vs the factory ABS tone ring, I was hoping I could reuse some of the factory stuff, but that looks like a no go. Now to see how expensive its going to be to get that trigger wheel made... Going to take the hub to a machine shop sometime this week to see what they can come up with. I really hope the traction control on my megasquirt is worth all of this trouble.

Turbonut

iTrader: (1)

Looks like you're way ahead of me!