Does anyone have a copy of the original wiring schematic?

[jrowan]

Hello All,

Must be that time of year for wiring woes, as we have had intermittent
problems with our Nav. bow lights going out on us at the wrong time.
I have also had problems with my interior cabin lights intermittently failing.
Also having intermittent problems with my electric water pump. I am wondering if the main wiring harness may be to fault.

I'm sure I have a corrosion problem somewhere in the circuit wiring, but trying to find it has proved difficult. It is not at the fixtures themselves,
and I have a replacement Blue Sea breaker panel. I tested the breaker switches which appear to have good continuity. One problem though is that the P.O. left an older toggle type switch panel in place & wired up, as well as the new breaker panel for some unknown reason. Both banks of switches control the mojority of all circuits. The new panel appears to have all new wiring to the 12 volt & seperate 110 volt circuits. But the lights have older wiring where they meet the terminal connections in the forward anchor locker & at the indivdual cabin lights that appear to be daisy chained wired.

Since this wiring is sealed between the cabin top fiberglass sandwich layers it is a bugger to replace, so I'm hoping I don't have to pull new wire for the cabin & bow lights. There is power at the positive bus bar wiring connection but the negative lead end has bad continuity somwhere in the circuit, where it exists the breaker panel & runs in the main wirining harness exiting from the nav station under the cockpit floor. Not sure if it goes back to the instrument panel first or to the alternator.

I am wondering if I have corrosion occurring at the R.V. type connecitons at the main wiring harness. Does anyone know if the main harness that connects from the cockpit mounted instrument panel to the engine alternator, etc. also has the lighting circuits included? I have traced a similar blue wire to the main harness at the alternator & am assuming it does connect here. But I am not sure why, as I assumed all interior lights were powered by the battery bank, which is charge by the alternator.

If anyone has a copy of the original wiring harness schematic it would be greatly appreciated. I may have it saved somewhere, but can't locate it yet. My wiring from the interior cabin lights is blue at the breaker panel, but is red & white at the lights themselves. The Nav. lights are purple & white at the breaker panel, but are red & black at the anchor locker. Doh! I think I may have to buy a wiring tracer to figure out where the meet.

Any advice is appreciated. Cheers.

 

[raylee]

Re: Does anyone have a copy of the original wiring schematic

I always look for a ground problem first. Just a little corrosion on a ground can cause a high resistance and intermittent or complete failure. I've seen links to wiring diagrams, just can't remember where.
Ray

 

[The Garbone]

When we bought our boat it still used all the stock wire and we had the same type of issues. I rewired the entire boat with proper marine wire and marine grade heat shrink connectors. Although not an quick answer it was not that hard to do and I no longer have any concerns with wiring and corrosion.

http://amzn.com/B000NUYBW0

http://amzn.com/B000NI007C

The bow light was not that hard to run up behind the upper trim piece in the V berth, poked a hole in the layup in the corner of the locker with a long screwdriver.

 

[Anonymous 121765]

Re: Does anyone have a copy of the original wiring schematic

JR,

How are pal?

The only suggestion I can add is to call Catalina in Calif. I have had then send me drawings/layouts etc. over the years. They've always been helpful. Just ask to speak with someone in the Engineering dept. Here is the phone# 818.884.7700. The secretary who answered was Dani.

CR

 

[Waitsfield]

Wiring diagram

The attached is from the owners manual I received from the PO ('87 C30). Not very detailed but it may be of some help?

 

[Anonymous 121765]

Re: Does anyone have a copy of the original wiring schematic

Wait,

That was why I said to call Catalina in Calif. The owner's manual version is rather rudimentary at best/at least.

CR

 

[mortyd]

Re: Does anyone have a copy of the original wiring schematic

catalina has moved to florida.

 

[Stu Jackson]

Re: Does anyone have a copy of the original wiring schematic

Google Catalina 30 wiring diagram

http://www.catalina30.com/TechLib/WiringDiagram/wiring_diagrams.htm

I find it remarkable that folks completely forget Google AND the Catalina Owner Association websites whenever these kinds of questions come up.

JOIN your owners association, give back to your community, and get all sorts of useful information.

 

[Anonymous 121765]

Re: Does anyone have a copy of the original wiring schematic

Mortyd,

Catalina Corporate is in California. It is there they have drawings & diagrams for the older boats. I live in St. Pete. & yes, they have a site that build Catalina boats, Capris & some sport fisherman boats. However the main engineering group is in California. I just called to check the phone number.

CR

 

[jrowan]

Re: Does anyone have a copy of the original wiring schematic

Thanks for the responses. I didn't think about Google, cause it usually gives you a lot of junk about C 30's for sale, etc. but looks like that's where the harness schematic was living. Cheers.

 

[jrowan]

Re: Does anyone have a copy of the original wiring schematic

Just thought that I would update that I did wind up running new wiring
to the bow lights, & to the cabin lights after all. After spending a lot of time tracing wiring throughout the cabin, I could not find the source of the bad connections. So in the end it was simpler & more reliable to run new wiring.

FYI: When running new wiring inside the cabin, the area between the wooden strip where the cabin wall / hull liner meets the inner deck is an excellent place to conceal wiring. There are also tiny gaps at the very corner of the bulkheads where you can slip new wiring through. I did not have to rewire all of the interior cabin lights, just a new positive wire from the breaker panel bus bar to the first light in the circuit, which is directly over the Nav. station & electrical panel. Pretty convenient for once! Cheers.