Key ignition help

[smoses99]

Hello everyone,

My key switch broke and i am having trouble tracking down what i need. I have a 75 bayliner with a 87 force 125. The old switch was a 6 terminal long shaft 3 position with terminals B,C,M,M,S and A. I found mp39090 at west marine, only difference is the A terminal was a I. Motor would not start. F5h078 seems close but still different. Guessing it won't work? Any thoughts or ideas?

 

[Fun Times]

Looking up your engine model under parts suggests F5H078 looks to be the latest OEM key switch going by your long barrel description (1‑7/16 in.(36 mm) as F5H268 (or old # F5H077) should be the short (1/2 in.(12.7 mm) barrel.

Though I can't confirm as there doesn't seem to any images available and it's no longer available, the key you have now may be F5H269 - Switch Kit-LONG

Found some wiring diagrams for each key switch.

F5H078, https://www.outboardignition.com/support/F5H078.png

SIERRA MP39090, https://www.ebay.com/itm/IGNITION-SW...MAAOSw-QxcWgo3
In the following link some key switch's offers a 'View terminal connections and wire diagrams in PDF's ➔
https://www.outboardignition.com/ign...val=103&val=19

And here is where Frank Acampora left us with his expert advice of some of the changes of the switch,
https://forums.iboats.com/forum/engi...ch-wiring-info