OMC Audible Alarm

[Faceaz]

1987 Evinrude V8: Started to get the boat ready for summer today & IÂ’m having a problem with the audible alarm. It runs constantly when the ignition is turned on. I checked the tan wire for any ground & thereÂ’s none. The alarm turns off when the ground on the alarm is disconnected. When the ground is disconnected & I ground the tan wire, the alarm sounds - so that part seems correct. Any suggestions? Is there possibly a problem with the ignition? I havenÂ’t tried to start the boat yet, as itÂ’s still winterized. Thanks for the help.

[Faceaz]

TTT
Anybody know of a good tech I can call? ~ Thanks

[Tom Brown]

The constant tone used to be the overheat alarm but that was in the pre-VRO days so I'm more than a little stale. I'm sure someone who knows will chime in with some real knowledge.
I'd definitely make sure your VRO is working.

[Faceaz]

Thanks for the reply. The VRO's are disconnected on mine, running premix. My understanding is the tan wire connects to all the sensors (overheating & oil). But that circuit is open, not grounded & I still get the noise. Any other ideas? ~ Thanks again.

[Kim Hanson]

Hi, I have a 1985 V8 and I just looked at a wiring diagram for it and the tan starts out at the remote control box and hooks to a low oil switch and travels to a vacum switch and ends up at a temperature switch.
I will try to scan this so you can see, hell,I will take some pictures.........( . )( . )......... :p

[Kim Hanson]

If these don't help, just pm me with your address and I will have one printed up and send to you............( . )( . ).......... :cool:
http://www.***boat.com/image_center/data/500/72HPIM1140.JPG
http://www.***boat.com/image_center/data/500/72HPIM1141.JPG
http://www.***boat.com/image_center/data/500/72HPIM1142.JPG
http://www.***boat.com/image_center/data/500/72HPIM1143.JPG

[Faceaz]

Thanks for the help. Could you post a clearer pic of the top section (with the control box)? I can make out the rest. It doesn't look like you have a ground wire coming off the warning horn, but the rest seems to look the same. Does your horn make a short beep when you turn the key on, or, does it only sound when there's trouble?

[Kim Hanson]

Thanks for the help. Could you post a clearer pic of the top section (with the control box)? I can make out the rest. It doesn't look like you have a ground wire coming off the warning horn, but the rest seems to look the same. Does your horn make a short beep when you turn the key on, or, does it only sound when there's trouble?
My horn isn't hooked up and I blew up an engine 2 years ago now over it..........( . )( . )............
http://www.***boat.com/image_center/data/500/72v8wiring.jpg
I could scan out the whole thing if you have a printer and just attach them all together....just say the word :cool: