Official 2003.5-2008 340 Sundancer Thread

[liv2ryde100]

That’s a good question? I had assumed it did because I get alternator voltage at the gauge when the engine is running but I haven’t tested when it’s not running. I’m away from the boat now but I’ll test that tomorrow afternoon when I get back over to it. Thanks for the idea... keep em coming

The solenoid had a fuse on it, maybe that’s it?

 

[outobie]

There’s gotta be a blown fuse or tripped breaker. Test all the fuses or at least visual inspection of them and then maybe shut off every circuit breaker on the panel and turn them all back on. If that’s not it it would have to be an inline fuse somewhere similar to that 90amp one or perhaps a blown solenoid behind the breaker panel in the engine compartment. I think I have a pic of mine with the cover off I’ll see if I can see any fuses back there on the solenoids or something like that

I keep looking for fuses or breakers but can’t really find any except the 90 for the starter snd the 50 on top of the motor. I looked in the main circuit panel in the engine compartment and nothing is tripped...or even related to the ignition circuit. The only one sorta related is for the battery charger...but again, not tripped. Plus all the components that operate off the stbd battery solenoid switch still all work (except fir the ignition) like the gps, engine hatch, etc.

 

[outobie]

The solenoid had a fuse on it, maybe that’s it?

Sorry I’m not following your comment. Which solenoid has a fuse? If you mean the starter solenoid with the 90 amp fuse then yes, I think that needs more investigation this afternoon. I don’t see any other solenoids with fuses. Please let me know if I missed something. I remember on my old boat (2001 Mercruiser 5.7) there was a 20 amp in-line fuse on the ignition. I keep thinking there must be a 20 amp ignition fuse somewhere that I haven’t found; that blew when I arced the positive lead on the alternator. But where could it be? That’s why I’m hoping someone has a wiring diagram for the engine. The Mercruiser #30 manual doesn’t have any wiring diagrams.

 

[liv2ryde100]

Sorry I’m not following your comment. Which solenoid has a fuse? If you mean the starter solenoid with the 90 amp fuse then yes, I think that needs more investigation this afternoon. I don’t see any other solenoids with fuses. Please let me know if I missed something. I remember on my old boat (2001 Mercruiser 5.7) there was a 20 amp in-line fuse on the ignition. I keep thinking there must be a 20 amp ignition fuse somewhere that I haven’t found; that blew when I arced the positive lead on the alternator. But where could it be? That’s why I’m hoping someone has a wiring diagram for the engine. The Mercruiser #30 manual doesn’t have any wiring diagrams.

Yea I can’t help u there with a wiring diagram but I was referring to the group of solenoids behind the circuit breaker panel in engine compartment. There is a fuse on the solenoids in there. The problem has to be before the battery parallel so prob not the fuses on the engine

 

[Korkie]

You have a working port motor to compare with. Follow the power trail starting at the battery, on each engine with power on and off and compare to see where it stops on the stbd side. Also, compare stbd to port to make sure you didn't reattach something on wrong post. My gut says as above, something tripped when you got that spark. Not sure, but I think the 90 amp fuse is at the other end of that cable, and it is a @#%$& to get to.

 

[outobie]

Ah ok, yes each solenoid has two 5 amp fuses. I checked the one for the windlass and the STBD battery disconnect solenoids...they were fine. I didn't bother with the ones on the port battery bank. Looking at the wiring schematics in the owners manual, those solenoids are the main battery disconnects. If I'm reading them correctly it's all or nothing, the wires going to them are the on/off wires; white with red and white with blue stripes, and the Red main large battery cables from the battery to the starter. I need to find where the Red unswitched wire running to the ignition switch get's it's power from...how does it tie into the motor's wiring harness? at the starter? I'll run down to the boat after work today and start looking at the starter and the alternator and tracing from there.

 

[outobie]

You have a working port motor to compare with. Follow the power trail starting at the battery, on each engine with power on and off and compare to see where it stops on the stbd side. Also, compare stbd to port to make sure you didn't reattach something on wrong post. My gut says as above, something tripped when you got that spark. Not sure, but I think the 90 amp fuse is at the other end of that cable, and it is a @#%$& to get to.

I have V drives...the 90 amp fuse is about the easiest part on the whole engine to reach...easier than checking oil

my challenge is connecting the dots...I get nothing at the helm. I think I get power to the starter (but I still need to test this to confirm). Yesterday I tried tracing from the helm back and got lost and couldn't find where it came out in the engine compartment...today I'll trace the opposite direction from the battery and see if I get farther this direction. after I was unsuccessful going from the helm back I stopped to come home and try to research.

Now I think I have a plan...start by testing for battery voltage at the alternator and both sides of the starter fuse...then try to trace the path from there forward.

As for reattaching something to the wrong post, I will double check but that doesn't seem likely. the plug connector only goes one way and the positive and negative wires are very different lengths...Positive wouldn't reach to the negative post....but it won't hurt to check again and compare to port

sucks being at work and trying to logic through this rather than being on the boat and being able to test each idea

 

[Korkie]

I think, but not totally sure, that when you turn on the ignition, either the breaker or key in electrical panel, or the actual ignition switch on dash, that will power the hot side of that 90 amp fuse, so should have power there. Once you have power on the in side, check the other side for power out. It takes a lot to blow that fuse, but that where I would start.

 

[outobie]

On the properly functioning port motor, with the ignition key, ignition breaker (on the cabin electric panel) and the starter switch (on the helm) all OFF, and just the main battery disconnect switch ON I get battery voltage to the voltmeter on the cabin electrical panel. I'm going to see if I get battery voltage at the starter fuse on the port motor in this configuration then compare that to STBD. I"m thinking the main battery disconnect solenoid controls power to the 90 amp starter fuse.

 

[liv2ryde100]

Since we are on the topic, does anyone know where to get those battery toggle switches at the top of the panel in the cabin? The lights in one of mine went out and I would like to replace it

 

[outobie]

carling makes them. forget the model but it has 8 terminals, it's a Momentary ON - OFF - Momentary ON with a light. buy the switch and reuse the rocker so it matches

 

[Fly4Kix]

Since we are on the topic, does anyone know where to get those battery toggle switches at the top of the panel in the cabin? The lights in one of mine went out and I would like to replace it

I bought mine from new wire marine. They also have an eBay store.

 

[liv2ryde100]

Thanks guys

 

[outobie]

top circuit is for the light on the switch, power and ground (one terminal for each)
then you have two positions for load out (two terminals) to turn the solenoid ON white/blue and white/red, then you have power and ground, then two more load out (two terminals) to turn the solenoid OFF white/red and white/blue (switched sides).

 

[outobie]

incidentally, how do these breakers work (not my boat, but similar). Ignore the yellow circled switches. my question is about the actual breakers..."cabin main", "cockpit refrigerator", etc.

I can't see any way to turn them on or off. what do they look like when they pop? can you reset them?

 

[techmitch]

incidentally, how do these breakers work (not my boat, but similar). Ignore the yellow circled switches. my question is about the actual breakers..."cabin main", "cockpit refrigerator", etc.

I can't see any way to turn them on or off. what do they look like when they pop? can you reset them?

On the left of each one of those breakers is a little slot you can stick a small screw driver into pop/test each breaker.

 

[outobie]

thank you

 

[outobie]

just got this response from the Marineengine forum I posted same question on...

starting at the starter, power comes from the battery cable .On this post is the battery cable and a plastic squarish block that has a Red and Orange connected together The REd is main system power and the Orange is the Alt wire.Accidently shorting out the alt or its output wire will blow this 90a link.
Check to see if the Red wire is connected at the starter

 

[Korkie]

If the rocker switch is working and the bulb is not - you an just replace the bulb, no need to get the entire switch.

 

[TheBobC]

Hello all. I have a generator issue I could use some help on. Kohler 5e. It will start and run fine form the bilge switch. I can shut it down from the cabin panel switch, but it will not turn over or start from there. When I first got the boat 4 years ago, I would have to push the switch several times to get it to work. Now, no amount of pushing works. Is it likely the momentary switch? The off/on switch? The harness connector (wherever that is)? Anyone have any thoughts?