Mercury 20 hp Switch Box test/diagnosis

Longcrier

Recruit
Joined
Dec 6, 2008
Messages
1
Any of you seasoned boat mechanics care to explain how to test to see if a switch box is failing? late 80's Merc 20 (Serial OB ) I'd prefer to isolate my problem before dropping cash on new parts. Thanks!
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Mercury 20 hp Switch Box test/diagnosis

There is not a real test for the box, although if you have a DVA you can test input and output voltage but with a OHM meter there is none anyway here the test from CDI. Sorry but I need a serial number or the part # off the box.
 
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