RindaTechnologies TechMate Pro User Manual page 56

MerCruiser Thunderbolt V Ignition
5) With the engine's ignition switch still in the OFF position, connect the
RED test lead to a +12 volt ignition power source. The engine's circuit breaker
terminal, as shown in Figure 30, is a good connection for +12v power.
Connecting to 3rd Generation Thunderbolt V Modules
Connection of the scan tool to the 3rd generation Thunderbolt V module re-
quires adapter #94020 attached to the tool. The adapter's red and black battery
clips and square data connector will be used for this application. To properly
connect the scan tool to this module carefully proceed through the following
steps:
1) Before connecting the scan tool cables to the Thunderbolt V module be sure
the engine's ignition switch is in the OFF position.
2) Locate the 3rd generation Thunderbolt V module mounted on the exhaust
elbow . Unplug the engine wiring harness from the module's four pin data
connector. Plug the square connector of the Thunderbolt V adapter into this
connector (see Figure 31 on the next page).
3) Connect the adapter's BLACK test lead to a good ground location.
4) With the engine's switch still in the OFF position, connect adapter's RED test
lead to a +12 volt ignition power source. The engine circuit breaker terminal
is a good location for +12 volt power (as shown in Figure 30).
Figure 32 Circuit Breaker Terminal
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