Refer to TM 5-3895-373-10 for engine starting and equipment operating procedures. Refer to paragraph 2.10 for
connecting and disconnecting STE/ICE-R test set to DCA.
Refer to paragraph 1.18.1 for horn circuit
To avoid reversing polarity to the voltmeter,
connect negative test lead to equipment ground
and use positive lead to probe for voltage.
Open right access door per TM 5-3895-373-10
to gain access to horn.
Refer to paragraph 7.21 for harness and lead