Box labeled 12V

[spharis]

Any of the tige mechs know what the ignition lead that goes to a box labeled "12V" heads to after it goes into the harness? It has a brown/white wire under the dash, but I am sure that it switches somewhere else. It's one of the last wires I have to track down. It bypasses the cut-off switch unlike the other ignition lead.

Igntion red wire -------> 12V relay/fuse??? box -------->red wire<---->brown/white wire......>?????

[spharis]

ideas??????

[Razzman]

ideas??????

Hey SP, according to the Boating Industry of America official wire colors chart, a brown w/stripe = alarm. Doesn't specify what type, just alarm. That help at all?

[spharis]

Dude I have no idea? I don't have any alarms outside my instruments as far as I know. Then again, I have absolutely no info on this boat other than what I gain in here and through tinkering on it. If it is an alarm, then it would be an alarm back to the engine compartment? Maybe it's a power lead to a sensor?

Do you have one of those under your dash? Mine it located behind the ignition switch screwed into the hull. It is the size of a pack of cigarettes. It has 2 lug terminals and no marking other than "12V" in white on it. I will see if I can take a pic. I don't think this area gets as much traffic as the other.

You know what I just thought about and I am going to feel like an idiot if this is the case.....it might be the brown and white that is the ignition lead to the bilge pump. I'll have to test that theory. But why would it be going through this box, unless this box is some sort of a rectifier so when the engine starts it will not fry the bilge pump? Ideas?

[Razzman]

Yeah i don't think may visit here, not as fun! I'd have to look at mine, i know i have that annoying oil pressure alarm that comes on everytime i go to start I don't remember seeing a "box" marked 12V but i can look.

[Jeff T]

Do you have the red transmission warning light on the dash? Could it be for that?

[spharis]

No trans warning that I know of. Maybe a buzzer or something, but no light. This wire runs out of the ignition. It is switched on with the ignition. It goes to something back in the boat, but it has to jump color somewhere. I am willing to bet that its wired to the bilge pump....though I don't know why it would be. It wouldn't make sense though as a bilge has an always hot, a switched, and a ground. This wire also bypasses the safety cut off. All the other switched power runs to my switch first.

**edit
Well.....Tige' told me that andrew at tige may be able to help. I'm going to send him an email with a photo and see if can get thrown a bone. I am guessing that's the same Andrew that is a member.

[lee]

Any of the tige mechs know what the ignition lead that goes to a box labeled "12V" heads to after it goes into the harness? It has a brown/white wire under the dash, but I am sure that it switches somewhere else. It's one of the last wires I have to track down. It bypasses the cut-off switch unlike the other ignition lead.

Igntion red wire -------> 12V relay/fuse??? box -------->red wire<---->brown/white wire......>?????

Brown with white stripe is for the bilge pump.

[dogbert]

Lee knows it all!

[spharis]

Brown with white stripe is for the bilge pump.

Right, but why does it go through this box (what is this box, rectifier?), and why is it ignition switched? I didn't test to verify that it is bilge yet.

[spharis]

Got some pics.....It's a continuation relay, and a huge one at that, but wtf for? It only has two tabs, so it was always closed, effectively making it an ignition switched source. I unhooked it, and everything works as is expected. Thinking it might be an alarm, I opened it up. Apparently, at one time it had a ground to the center area, that would have turned this output off when the ignition was turned on. Anyone with experience with older Tige's know? I don't see the reason this would be used even if it were for a bilge pump. Basically the way it was wired, it never had output. It was wired to the ignition, but if the center was grounded, then as soon as the key was turned on, it would disconnect. Never had output.

As far as brown and white wires, I have 2 sensors with brown wires and a white stripe. Temp, and oil psi. Considering that I replaced the bilge earlier this year, and I'm sure the one that was in it was also a replacement(something about the electrical tape tells me that), then is this maybe a factory thing Tige did to set up an automatic bilge from the factory? I still don't know where the other end of this wire goes.

[TeamAllen]

The Merc engines all had this horn/whistle noise that would sound if there was loss of oil pressure or high temperature increase.

It wouls sound every time you started the boat until the oil pressure would build up and cancell out the noise. It was a high pitched whistle.

I don't know if that is what you are looking at, but that's all I could think of.

[chpthril]

Looks like a turn signal flasher to me

[Razzman]

My '95 has that oh so annoying buzzer but i don't have any box that resembles that anywhere.

[spharis]

I don't have a buzzer of any sort. I am guessing the buzzer would be on the instrument.

Razz you would see it clearly under the dash if it were there. It is mounted on the bottom side back from the ignition.

This is a really old 12V relay. I think it was some kind of an automatic bilge or something. Who knows. I am going to pull all the wiring out associated with it and pretend I never saw it.