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4.0 Probe & RZU Installation:
4.1 Wheel/ Drive Shaft Probe T005 & T005A:
Also see Figure 1 & 2 for wiring and fitting diagrams.
Make a bracket to mount the probe and position the probe so that it ‘looks’ at the steel
heads of the bolts which secure the brake disc to the wheel hub of a non-driven wheel
– see drawing. In some cases it might be more convenient to look at holes in a metal
surface. The probe must be co-axial with the centre line of the bolts and the front face
of the probe must be parallel with the heads of the bolts. Cup-head [Allen] head bolts
do not give the probe a good signal and should not be used. Screw the probe on so that
it touches the head of one of the bolts and then un-screw 1 to 1 1/2 turns(T005), 1 to 3
½ (T005A).
Connections: See wiring diagram
4.2 Cable Drive Probe – T006:
Also see Figure 3 for wiring diagram.
For fitting to a mechanical speedo cable.
Position the probe in a straight section of the speedometer cable. Remove the inner
speedometer cable and cut out 42 mm section from the outer cable. Put the metal
sleeves and ring nuts over each end of the outer cable. Push the inner cable through
one outer half and then through the sensor. Put the inner cable through the other outer
cable; tighten the two socket head screws in the rotor. Fasten the ring nuts.
The sensor is designed for 3.2mm [1/8 inch] inner cables. If your cable is larger
remove the two socket head screws from the rotor and fit a M2.5 mm screw in one of
the rotors screw holes. Carefully drill out the rotor with a sharp drill with your drill
rotating at low speed.
Some cars have an inner cable which cannot easily be removed. In this case cut
through both inner and outer cable. Remove 21 mm from each end of the outer cable.
Push the metal sleeve and ring nut on to each end of the outer cable. Push the inner
cable in to each end of the sensor and tighten the rotor screws and then the ring nuts.
4.3 Japanese Gearbox Probe – T007:
See Figure 3 for wiring diagram.
Unscrew the car speedometer cable from the gearbox. Push the forked peg into the
probe from the end of the probe with ring nut, push square peg into probe from other
end so that it engages into the forked peg. Screw the Japanese probe into the gearbox
(thread must be M22) tighten by hand only. Screw the car speedometer cable into the
opposite end of the probe.