New Holland T8010 Manual page 1330

Test point
2 Measure resistance
between speaker
connector 92F, terminal B
and radio connector 95B,
terminal 10.
Test point
1 Disconnect connector 95B
from the radio, and
connector 93F from the left
rear speaker.
Measure resistance
between radio connector
95B, terminal 15 and left
rear speaker connector 93F,
terminal A.
2 Measure resistance
between speaker connector
97F, terminal B and radio
connector 95B, terminal 16.
Test point
1 Access connector 95A.
Attach test light to ground and
probe cavity 6.
Turn head lamps on and off.
Test point
1 Disconnect antenna from
radio.
Measure resistance
between center terminal of
antenna (radio end) and
antenna mast.
Section 55 - Electrical System - Chapter 1
D - Right Rear Speaker Circuit Test
Good Reading
Less than 1 ohm
If good reading, right rear
speaker wiring is okay.
E - Left Rear Speaker Circuit Test
Good Reading
Less than 1 ohm
If good reading, go to test
point 2.
Less than 1 ohm
If good reading, left front
speaker wiring is okay.
F - Audio System Illumination Test
Good Reading
Test lamp will glow full
bright with headlights off,
and glow dimly with
headlights on.
If good reading audio
system illumination circuits
operating properly.
G - Antenna Test
Good Reading
Less than 1 ohm
If good reading, go to next
test point.
55-1-149
Possible Cause of Bad Reading
Open/short to ground in circuit 874A(B)
between connectors 95B and 92F(B).
Possible Cause of Bad Reading
Open/short to ground in circuit 875B(O)
between connectors 95B and 93F.
Continue with next test point.
Open/short to ground in circuit 875A(B)
between connectors 95B and 93F(B).
Possible Cause of Bad Reading
Check for loose, damaged, pushed
out, corroded, or bent terminals, or
Open in dimmer circuit from
connector 95A terminal 6 to
instrument cluster.
Possible Cause of Bad Reading
Antenna.