The Hook has a built in two channel Continuity Tester for testing relays and electrical switches. You will also be apply-
ing power to the relay coil using the auxiliary ground lead and the probe tip.
When the 3 wire continuity plug is inserted into the jack, the Red/Green LED’s are now dedicated to the Continuity
Tester. You can still use the Hook normally to power up or read voltage, ohms or amps.
To test a 5 terminal relay in Power Probe Hook Mode:
1. Pull the Rubber Cover from the Continuity Jack and
swivel it out of the way.
2. Insert the 3 Wire Continuity Plug into the Continuity Jack.
3. Connect the Black lead to relay terminal #30.
4. Connect the Green lead to relay terminal #87a. (the Green
LED should light)
5. Connect the Red lead to relay terminal #87.
6. Connect the Hook Auxiliary Ground Lead to terminal #86
7. Contact the Hook Probe Tip to terminal #85.
8. Press (+). (the Red LED should light and the Green LED
should go off)
9. Release (+). (the Red LED should turn off and the Green
LED should light)
V
- CONTINUITY TESTER AND RELAY TESTER
85
86
87A
87
30
30
86
87
85
87A
M
A P
2
1 0
1
Red light on
M
A P
2
1 0
1
Press &
hold Power
30
86
87
85
87A
M
A P
2
1 0
1
Green light on
M
A P
2
1 0
1
No
contact
No contact
Solenoid
NC
Feed
NO
Open
Rubber
Cover
normal voltmeter will automatically kick in. With Dual Meter feature, you can better diagnose grounds in the presence
of voltage drops without having to waste time waiting for the systems to shut down! Now that’s a Smart Tip Advantage!
Interpreting the data:
The intention of this data is to inform you that accurate resistance measurements cannot take place
when millivolts are present. Standard ohmmeter readings will provide completely unusable data under this condition.
Is your high resistance reading due to a poor connection or a voltage drop? The Power Probe HOOK is the first in the industry to
answer this question in one simple test. With the Dual Meter feature you are now alerted to the voltage drop while conducting a
resistance test. The HOOK will supply you a more accurate resistance reading during this scenario. The fact remains that if you
see a voltage drop during the resistance test, you will need to remove the voltage drop to acquire the most accurate resistance
reading, however, now you can continue testing using the Dual Meter with the voltage drop present and the resistance value
as a guide since The HOOK is displaying a more accurate reading under this condition.
Note: Due to voltage drops inherent in the 20 foot power cable the ohm meter may experience some error below .30 ohms
depending on the distance from battery to your measurement.
Contact
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