Looking for electrical schematic 2004 40 DS (engl)

[cpetku]

The closest I've come is the standard 40 in French, but things are in different places.

I'm trying to figure out why the radar and Quick Windlass remote (both at the helm station) reset when there are loads on other electrical systems (e.g., electric head). I'm not sure how these instruments were added to the factory wiring harness'. The first step is to understand where the Windlass solenoid is located. I thought it would be in the Anchor locker, but no luck yet.

--Craig

[saxofon]

Hi Craig,

I would first start with measuring voltage at the radar and windlass (and at all their different "submodules", like windlass motor, windlass remote controller etc)

I had issues with the sounder in my boat. Quite thin cable went to the navpod so instead of having multiple thin cables (for power supply that is) to navpod for a bunch of instruments, I use one big fatter cable and a distribut scheme in the navpod
(which have fuses and such). Problem went away, I have less wires in boat and it feels just more problem-proof :-)

It seems that our modern electronics gets more and more sensitive to voltage drops, might be that the heads pumpmotor
in your boat manage to squeeze so much amperage out of the batteries so there is a sufficient voltage drop for other
equipments to fail. (a electric motor does consume quite a lot power in it's starting phase)

If this is a case, I guess there is two causes

* too thin cables

* not enough power in your battery bank

[cpetku]

Thanks,

Shouldn't be the battery bank as I just replaced all 4 house batteries with grp 31 AGM's I need to find some di-electric grease as I noticed slight oxidation on some of the wiring at the battery disconnect, but cleaning this up didn't change the symptom this weekend. Also did a rebuild on the electric head to make sure the impellers weren't sticking and causing excessive current draw. Ultimately this is going to be an undersized wire or corroded contact.

I also realized the SO40 wiring diagram is sufficient for my purposes as even if I find an SO40DS sschematic in english, it will not have details for the circuits I am interested in. The problem here is the affected systems are not factory installed options. Looking at the SO40 wiring diagrams, they don't even include the charger breaker.

[cpetku]

FYI (in case anyone else runs into these issues),

While not totally finished fixing this here's the main culprits...

Quick Chain Counter: This was installed with the power feed for the unit connected to the power and ground feeds for the windlass control relay. Noise from the winch causes the remote chain counter to reset. Solution, connect the Quick chain counter to a clean power feed, works fine now.

Radar Reset: The problem disappeared for a couple of weeks after working on the battery bank, only to show up again this weekend after someone flipped the battery disconnect. It appears that in one of the postions there is a burn mark in the disconnect that causes increased voltage drops. Turn it 180 degrees and the problem appears to go away. I will be attemptng to pull the disconnect and clean the contacts next weekend, but in its current position it works fine.