Ricoh D158 Service Manual page 59

ARDF Installation (for D160/D161/D170)
11. Cut away the knockout [A].
12. Attach the harness bracket [A]. ( x1)
13. Set the cable and fix it with clamps as shown [B].
14. Connect the end of the cable to the engine board [C].
15. Fasten the grounding wire [A] as shown. ( x1)
D158/D159/D160/D161/D170 2-27 SM