TM-9-2350-277-20-1 Unit Maintenance Manual Volume 1 M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-20-1 HORN DOES NOT WORK—Continued 0037 00 6Y 1. Remove jumper wire from harness 123498558 circuit 25A plug. 2. Install circuits 25 and 25A on horn switch. 3. Install harness 8761491 plug on harness 12349881 jack on fire wall. 4. Repair harness 12349858 circuit 25A (WP 0382 00). 5. Verify no faults found. 0037 00-4