Buhler 2425 - Manual (Page 49)

SECTION 1 - GENERAL INFORMATION
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Some monitors require a true ground speed
signal from a radar unit to be fed into them for
proper operation.
Buhler Versatile 4WD tractors equipped with
a Tractor Performance Monitor (TPM) option
can provide this signal to the monitor by
tapping into the existing wire harness on the
tractor.
To tap into the existing signal wire on the
tractor, use the following procedure:
a. Remove the cover from the rear of the
TPM module on the right-hand console.
The cover, 1, is held in position with velcro.
Figure 1-41
b. Pull out wire harness, 1, that is tucked into
the rear of the TPM.
c. The TPM is connected to the main cab wire
harness with a green 8-pin connector.
Locate the gray wire marked “CM-90” that
is plugged into the connector.
Wire “CM-90” is a processed 5-volt signal
that supplies the TPM with a 58.9 Hz/mph
output from the Electronic Instrument
Control System monitor
d. Using a pigtail-type splice connector, tie
into the “CM-90” wire with the wire leading
into the implement monitor.
The monitor will now receive a signal from
the radar unit at the front of the tractor.
e. Route the signal wire along the right-hand
console and out to the implement monitor.
f. Reinstall the TPM wire harness and
connect back into place and install the
TPM backplate.
Figure 1-42
1