Switch Box Interchangable?

Skeeter54

Seaman
Thread starter
Joined
May 28, 2015
Messages
60
I have a 1984 Mercury 115. Shows to use switch box 7778A6. Will 7778A9 work? Can't find a definite yes or no. Thanks in advance
 

Skeeter54

Seaman
Thread starter
Joined
May 28, 2015
Messages
60
The 7778A9 is for an 86 so just checking to see if someone can confirm
 

racerone

Honorary Supreme Mariner
Joined
Dec 28, 2013
Messages
39,998
The a6 or a9 suffix has to do with minor changes / production run / supplier.---It will interchange.
 
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