2005 SV1900CC rewire

[CF]

Hello All,  This is my first post/thread on this forum.  Not sure exactly what to call it, but regardless I hope it helps somebody figure out how to solve their SV1900CC wiring issues.

I have a 2005 Sea Pro SV1900CC with a 2005 Yamaha F150.  I live in Charleston, SC and absolutely love the boat for inshore family time and fishing.  It really is one of the best inshore hulls out there in my opinion and paired with the F150 it rocks.  However, I bought the boat used last summer and the nav lights have never worked - even when I replaced the nav light base and pole.  So, I attempted to figure out what is wrong in the wiring, but could never figure out the wiring problem and always looked like a complete mystery (birds nest).  During my trying to fix the Nav lights I read here and on THT about how shotty the factory wiring job was on these boats and decided to rewire the whole darned boat.

I had a lot of trouble finding anyone or posts with the SV1900 and what they did to rewire, so I figured I would start a new thread and share my soup to nuts experience.  Hopefully this is cool with this forum.  To start I know exactly zip about wiring anything and before this process I couldn't tell you anything about AC or DC, other than they wrote some killer music.  That being said, I do now how to read and have put many many many hours into studying up on what I wanted to do and now think I need to do.  I just asked, what's the worse that could happen and went for it. (disclaimer - as I write this post I am in the middle of the project, old wire has been pulled from the boat)

Where I'm starting from (and likely where you are if you have the same boat and have not rewired):
Switch Panel: I'll start here b/c it's probably the first place we all looked when there was an issue.
- Behind the switch panel there is a mess of wires that seem to make no rhyme or reason.  Some are connected things in a row, some connected to the instruments (tack, speedo, etc), and likely some connecting to other stuff off in the distance we can't determine.  There are so many wires connecting crap to crap back there that it is almost impossible to figure out.
Stern: I have two batteries in the aft starboard compartment connected to a Perko switch.  On the Perko (All) switch I have a red 10ga wire with an inline 20a fuse leading out and also a 16ga wire leading directly to the bilge pump.
Rundown of connected stuff (either on a rocker panel switch or unit directly connected somehow):
1) Horn - Momentary rocker switch
2) Navigation lights - rocker switch
3) Livewell - rocker switch
4) Washdown -rocker switch (although I have no washdown pump anywhere to be found)
5) Bilge Pump - rocker switch and direct connect to battery
6) Courtesy Lights (there are two on either side of CC) -rocker switch
7) Acc-1 - rocker switch connected to a little light in the livewell from what I can tell
8) Acc-2 - rocker switch not connected to anything
9) 12V plug
10) VHF Radio - direct
11) Lowrance M68
The only things on rocker switches that actually worked was #3 and #5(bilge pump).  #10 and #11 also worked independently.  So, I guess 4 out of 11 ain't bad huh.

Where I am going:  First things first I want everything to work as expected!
Basically I am using the existing switch placement (1-8) for the same things, but with a few changes:
-Replacing all switches and circuit breakers (more to come on this)
#6 courtesy lights - I am changing from bulbs to LED and going from 2 lights to 4 lights (sides of cc and front and back of cc)
#11 upgrading older Lowrance unit to Garmin either 54dv or 74dv (undecided and may change yet again)
#7 will be my fishing lights.  little light in livewell and white led light in front of CC
-Adding stereo and 2 Kicker brand speakers to sides of CC
-I also want the ability to hook up a LED spreader light when I'm out shrimping or fishing.  Plan to plug this into the 12v plug for now
-Not knowing the future I want the ability to add stuff later and need to plan the wiring appropriately

I'll continue this thread a little later with images I've taken and explaining as I go along.

[catchersrock]

Hello and good luck with your project. I dont know if this will be helpful. My boat is an '08 1900 and I found the below wiring diagram for the panel. 







Below is a diagram for the older boats

[gnrphil]

Awesome first post and  thwelcome31 , BTW the live well light should come on with the courtesy lights.  emthup

[catchersrock]

Mar 7, 2017 8:56:28 GMT -6 gnrphil said:

Awesome first post and  thwelcome31 , BTW the live well light should come on with the courtesy lights.  emthup

My livewell lights only come on when the livewell pump is running. I like the "with the lights" better. 

[freezerfiller]

Welcome to the forum! You are helping yourself by going LED. They will run for hours without killing the battery vs old school. I will give you one tidbit of advice to consider regarding your spreader lights. Get yellow. Those white ones are great for the best visibility bringing that amberjack off the rig 28 miles offshore, but if you are shrimping and near shore, they attract every kind of bug you can imagine! Never did understand why they don't have a door switch for the livewell lights.. That's how I would do it...

[gnrphil]

Mar 7, 2017 9:11:22 GMT -6 catchersrock said:

Mar 7, 2017 8:56:28 GMT -6 gnrphil said:

Awesome first post and  thwelcome31 , BTW the live well light should come on with the courtesy lights.  emthup

My livewell lights only come on when the livewell pump is running. I like the "with the lights" better. 

Should be fairly simple to wire them to the courtesy lights, for all I know mine is wrong LOL.

[CF]

Over the last month or two I have read and re-read quite a few posts, documents, and anything I that I felt was good info and could be understood for a newbie. Here are the links that I have gone to time and again:

14 Steps To Wiring Your Boat: newboatbuilders.com/pages/electricity13
Sea Pro Wiring Schematic: rnr-marine.com/Sea-Pro/Sea-Pro-Wiring-Schematic.jpg
This might have been one of the best threads ever on a rewire. This guy is meticulous and provide detailed pictures and descriptions of every step www.thehulltruth.com/boating-forum/409863-bx24-gear-install-partial-rewire-build-thread.html
Great resource for figuring out the wire size and fuse types: www.bluesea.com/support/articles/Circuit_Protection/1437/Part_1%3A_Choosing_the_Correct_Wire_Size_for_a_DC_Circuit

So, I have drawn out my wiring schematic and wanted to post for feedback, but cannot get my scanner to cooperate. I will try to post tomorrow with my thoughts about what I am doing.

[CF]

Here are some pictures of my rig and the guts of the project.

My rig


Front of switch panel before removing


Back of panel


Ughh - the nest


Aft batteries


Inside bilge looking forward. In this image I have already removed all the wiring and left 3 pull lines for the new wire install


Inside gas tank area looking forward

[CF]

Okay folks I got the rest of my groceries in from Genuinedealz today and very excited to get started.

So far I have swapped out the switches and breakers in the panel and gonna start connecting those wires this evening.

Here is my schematic I drew and would love to get any feedback from the forum.
CHA1PT15_Scan_20170308_163346.pdf (646.32 KB)

General plan is as such:
-2 batteries in aft (#1-Motor, #2-House) connected via Perko Switch
-From Perko switch, running 6ga flat wire to the CC with Maxi Fuse near switch - thinking 40a fuse ought to be plenty based on the equipment I'm running
-Install a Neg Buss Terminal in battery compartment for negative connections to stuff close to the stern (Bilge, Nav light, and Livewell pump)
-Wire the Bilge pump directly to the Perko switch for constant power (auto) and run 2nd wire 14ga to switch panel for manual
-In CC I'll install a Blue Sea split bus fuse block.  Has 12 spots for expansion later as needed.
-Connecting fuse block to circuit breakers with 10ga positive wire and will use same size neg wire too
-Using 10ga wire on daisy chain for circuit breakers
-Running ABYC 14ga wire from switches to the equipment (Using the switches for same equipment as already labeled for)  Exact ABYC is a little tricky b/c I couldn't find the striped colors, so doing this as close as I can.  Will label extensively so I can figure out everything later anyway.
-Acc 2 switch will be my fishing white light switch.  Although based on feedback from freezerfiller I will get yellow spreader lights for my shrimping/fishing night expeditions

Connected to the Blue Sea fuse block will be:
-Garmin GPS (or other) - also has an inline fuse
-VHF Radio - also has an inline fuse
-Stereo - also has inline fuse. (Haven't picked out this equipment yet)
-Compass - later down the road

Please let me know what you think of the plan - hopefully I have everything sized right so I don't burn up

Here are some of my groceries and the new switches looking good in the panel










new switches and still have to get the 12v plug and a figure out which breaker size to use in the open slots

[mosquito13]

Only real bitch I have with my boat is it wasn't wired with tinned marine grade wire, never understand that... Learn about dialectic grease, used from new and you will save yourself problems in the future. Buy only heat shrink crimp connectors with adhesive , same for shrink tubing. Better to solder any connection, but who has time for that... Good read is the "12 volt doctor Practical Handbook" free online. www.kb-kbh.dk/shipslib/el_ombord/12volthandbook.pdf Good luck and look into marine duplex wire. I pulled a six strander when I got the boat on recommendation of my mech.'s and with the new stern light, spot light have used the last of the six.

[CF]

Here is the original negative wire - crazy how it's all spliced together.  Image looks deceptive - the larger wire is only 10ga

[seabisket]

Here's a tip I will be using in the future: Make a layout board and do all your connections / etc on the board and pull the finished harness to it's destination.




I'd pulled a bunch of single wires ganged and then terminated them in place, etc. Had I'd done it over again, I would pull already terminated wires so all I am doing is making the final connections (spades / rings / etc) and all the heat shrinking / crimping is done in open and easy quarters on the layout board.

[yolo]

Mar 9, 2017 20:00:02 GMT -6 CF said:

Here is the original negative wire - crazy how it's all spliced together.  Image looks deceptive - the larger wire is only 10ga

This is what i found. But mine ran through the raceway they put in at the bottom of the hull where all the water channeled to get to the bilge. About a foot of corrosion on each wire I found.

[jdstud6]

Hey CF,

This is my first post as well.  I just joined after reading through your post.  Unfortunately, the pictures are no longer available.  I have essentially the same setup as you, and have been thinking about doing some wiring work to resolve a few issues.

I'm curious if you could email me your photos and give any updates as to how it's all working out.

Thanks,

JD

[CF]

Jun 18, 2018 10:39:50 GMT -6 jdstud6 said:

Hey CF,

This is my first post as well.  I just joined after reading through your post.  Unfortunately, the pictures are no longer available.  I have essentially the same setup as you, and have been thinking about doing some wiring work to resolve a few issues.

I'm curious if you could email me your photos and give any updates as to how it's all working out.

Thanks,

JD

Hi JD, Happy to help.  It has been a little over a year since I did the rewire and I am so happy that I did.  Everything works as it should and I have a ton of confidence that I can fix anything may go wrong.  However, that being said it ended up being much more work than I anticipated and a lot more $$$$.  I should still have most of the images and happy to send some your way, but could you tell me a little more about what issues you are trying to fix?

[jdstud6]

Mine is a 2006 SV1900 with 2005 Yamaha 150.  Of course over the years, things have been changed a little.  We bought the boat 2 years ago, and it's our first boat.  We've really loved it thus far, even though at times it can be frustrating.

We have 2 house batteries in the console running a trolling motor running at 24V up front.  One of those batteries also goes to the switch, which is in the back by the starting battery, to supply 12V as a "#2".  I just figured out that all of our accessories bypass the switch completely, and are wired directly to the starting battery.  I just picked up a new switch (Blue Sea 6011) to upgrade the current switch to an "on/off" type and keep all accessories on the #2 house battery, instead of the starting battery.  That shouldn't be too tough.

Our last 2 rockers are ACC1 and ACC2.  I'm fairly sure that ACC1 used to run a livewell pump, to fill the well in front of the console.  ACC2 runs the stereo.  As of late, both of those switches seem to not work more than they do work.  I opened the hatch near the motor and can see what looks like 2 livewell pumps, so I believe that ACC1 is for that 2nd livewell pump.  Although I have a rocker for washdown, I do not believe I have a washdown pump.

At this point, it's not slowing us down.  The livewell and stereo not working aren't a big deal, but at some point I'd like to get everything in working order.  I've been debating about installing a fuse block with negative posts or a bus bar and positive terminal to clean the wiring area up a little.  It's quite messy and hard to track down what is what.

I spent about an hour last week crawling around looking in holes trying to find where all the wires go/come from, but it's not the easiest as you know.  A lot of wires are tied together and the colors aren't easy to see/trace.  At some point when I get some free time I may start cutting some wires to figure out what is for what accessory.  I'm in Charleston also, so it's a little too hot and I'm too busy to give it much time right now. But you are an inspiration for sure.  Your pictures may give me some ideas.

JD

[dgljr]

I have a 1998 170 cc and am about to undertake rewiring and revamping the electrical and breakers. The photos on your post are no longer there. Can you send them to me or repost?

[biscoiv]

I'm going to be doing the wiring in my 05 220CC and would love to see the pictures of how you did yours. Could you repost them or possibly send them to me?