Serial : OG540389. Mariner 150 EFI 2.5 litre. Warning horn does not beep when the ignition is turned on. Can anyone tell me what it is that signals the horn to sound from the ign key? Going to check out the obvious such as broken wire, poor connection etc. this morning. Thanks for any help you can offer.
purple wire is 12v at key on module supplies grnd /tan wire , test horn first
.................................................. ...the scariest thing in life is the unknown ...................................
Thanks Joe. I have power at the horn and it works when I ground the tan wire. Is there an 'quick' test to make sure the low oil and overheat warnings still work?
Is it possible that the Oil Injection has been removed (now pre-mix only) on this engine?
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