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Registered
Join Date: Nov 2007
Location: Orange, California
Posts: 480
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You should not need any adapter for your combo. The 87 tach should accept the tach signal from that DME. Unfortunately I'm on vacation right now and don't have access to my info at home otherwise I could tell you the pin assignments on rear of tach. You should need just 3 connections: power, ground and tach signal.
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