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Old 05-10-2013, 12:16 AM   #41
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Roy and Doc,
I'll get these readings this weekend when I change out the IOTA.
The only thing I am thinking is that I've been camping solid for 18 days before this started.
The PO fried the battery in the 1st year I am assuming because it was from having the TT plugged in for a long period of time with a non-smart converter.
I also had the TT plugged in at home and everything fired up for about 2 weeks before I left going through all systems.

If this was an issue of Neg/Pos terminals reversed, wouldn't it have showed itself before 18 days into my trip?

Once it started going bad, it would throw a fault on the frig 2 hours after disconnected from TV repeatedly.

I'll check it and verify.

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Doug
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Old 05-10-2013, 07:59 AM   #42
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DOC not true in the house wiring world which is the colors the RV trailers go by. What you are saying is TRUE in the automotive world where BLACK was always ground. Me no EXPORT as well but have slept in many of the Holiday Inn Selects across the US in my working days running with the so-called exports haha...

This is exactly what causes the REVERSE POLARITY of cables. Us OLD guys will put a BLACK cable to ground everytime haha...

The RV Battery hookups will use these two hookup methods...

If you have a BLACK and WHITE pair of cables the BLACK will be the POSITIVE (=) and the WHITE (-) will be NEGATIVE (-). The WHITE CABLE will come from the trailer FRAME GROUND Connections very close to the Battery. This is the RV standard way of hooking up the batteries as well as everything else 12VDC in the trailer.

However since batteries are used in the automotive world alot of cables feeding the BATTERY in the RV are wired with RED and BLACK battery cables. That's the colors I used in my battery lash-up when I added more batteries. So you have to be careful here as they are mixed alot. In this case the RED goes to the POSITIVE(+) terminal and the BLACK goes to the NEGATIVE(-)...

If you ever have to replace your JENSEN AM/FM radio in your POPUP trailer the new one will come in a box with RED and BLACK wires used for hooking up to the 12VDC in the RV trailer. Here you will have to place the Jensen RED Color wire on top of the trailer BLACK color wire and the JENSEN BLACK colored wire on top of the trailer WHITE colored wire. This really makes us old guys roll over in our graves haha...

Doug has already posted photo of his IOTA showing BLACK and WHITE battery cables are being used which shows the black cable is coming from the POSITIVE(+) side of his IOTA and the WHITE is coming from his NEGATIVE(-) terminal. I was just wanting him to confirm one more time for me since I noticed he has never removed those cables at the IOTA unit when he tested things. I don't know for sure if Doug has ever grabbed the WHITE CABLE at the battery and hand traced that cable to the trailer FRAME ground or made 100% sure it connected to the NEGATIVE TERMINAL of the battery case where it should be marked on the battery case as "NEG" or the symbol "-".

https://www.jaycoowners.com/attachmen...779202&thumb=1


I then got to thinking about the IOTA which I think has a detect circuit inside that if it see's the wrong POLARITY it shuts down. Since Doug has never removed the battery cables during his test this may be the reason why the IOTA is not showing the 13.6VDC voltage at its terminals. I was wanting him to remove the battery cables from the IOTA unit and do one more test for me by plugging the IOTA unit into 120VAC and see if it puts out 13.6VDC on its terminals without the battery connected to the terminals. Just me still scratching my head why his relative new IOTA unit has failed. He sure doesn't want to plug in his new IOTA and it goes up in smoke too.... I think it needs one more test...

Just my thoughts
Roy Ken
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Old 05-10-2013, 08:54 AM   #43
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To add to the discussion on wire colors...., I up-graded to a PD 9245C Converter/Charger and installed it a couple of months ago. My original IOTA DLS Converter/Charger (mounted to the back of the IOTA ILC-3045 (Load Center) was working just fine but was only a 2-stage unit, thus I wanted the PD Charge Wizard feature (similar to the IOTA IQ4 feature) for better control of my up-graded deep cycle battery bank.

I decided to leave my IOTA DLS in place mounted on the back of the IOTA Load Center as a back-up, but disconnected it from the power circuit, and mounted the new PD 9245 near the Load Center and landed the associated cables/wires.

Anyway, I did take a couple of crude pics of my IOTA connections "prior" to installing the new PD 9245...., the pics reflect the landing location of the cables on my IOTA DLS Converter/Charger:





In my case the system was wired with "RED" landed on the positive lug and "BLACK" on the negative lug...., this was the way they did it in 2005.

Bob
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Old 05-10-2013, 09:28 AM   #44
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Rusty - Thats what I did as well with my 2008 OFF-ROAD POPUP setup... My battery cables are RED(+) and BLACK (-) but I added those....

However the 12VDC wiring that runs to all of the appliances inside the trailer use a 2-cond marine cable with Black and White wires. BLACK here is POSITIVE(+) and WHITE is NEGATIVE(-)





You can see my RED and BLACK wire colors in this drawing... You can see all the wire colors used in the WF8900 series power dist unit as well.

Alot of trailers use the BLACK and WHITE cables going all the way to the battery like DOUGs. In this case the BLACK is POSITIVE(+) and the WHITE is NEGATIVE(-)... Just the way it is....

Roy Ken
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Old 05-10-2013, 06:40 PM   #45
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I replaced by 12V IOTA DSL45/IQ4 converter today.
Everything checked out ok and the old one had a fried capacitor.

To replace:
1. Turned off all electrical in TT
2. Disconnected shore power
3. Disconnected battery
4. Took out screws mounting converter
5. Disconnected white and black wires (blk to +) (wht to -)
6. Disconnected frame ground bare wire
Note: the lugs take a square driver, luckily the guy next door had one I could borrow

Before installing new converter, plugged it into 120V and measured 13.56V output

Installation was just reversed.

This unit has a smart charging module that just plugs into converter like a telephone jack and has a green light
I put a screw in this module and mounted it next to converter.

I plugged the old converter into 120V and measure 0 volts output.

I took the old converter apart and instantly seen a capacitor had blew its top :-)

Here is voltage on new converter, just plugged into 120V on bench
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Here is voltage on old converter, just plugged into 120V on bench
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Here is inside of old converter
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I also checked my ground wire from the battery.
It is white and there is a grouping of white wires screwed to frame ground.

I also checked that all 12V system worked before connecting battery. They did.

All is currently well in Santa Cruz along the shore
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Thanks again for all the detailed and helpful responses.

Kind regards,
Doug
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Old 05-10-2013, 06:50 PM   #46
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Capacitors are often the weak link....probably a 50c part!!!!! I had a hot video card in my last Dell Desktop - had to replace a particular cap about every 3 years.....grrrrrrrr

I'd repair the Iota, test it...keep for spare....
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Old 05-10-2013, 07:48 PM   #47
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Thanks for the education Roy. Glad everything worked out well Doug. When I have any rv electronic questions I'll know where to turn. Tony
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Old 05-10-2013, 07:51 PM   #48
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Quote:
Originally Posted by Threebutchers View Post
Capacitors are often the weak link....probably a 50c part!!!!! I had a hot video card in my last Dell Desktop - had to replace a particular cap about every 3 years.....grrrrrrrr

I'd repair the Iota, test it...keep for spare....
Yep, I agree Threebutchers,
I'll talk with IOTA or just take it to Radio Shack and replace that capacitor.
I thought it might be a plug in, but didn't come out easy.

A project for another day :-)

Best regards,
Doug
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Old 05-10-2013, 09:30 PM   #49
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Doug,

Project successfully completed ...., time to get back to some serious camping
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Old 05-10-2013, 10:13 PM   #50
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Quote:
Originally Posted by Rustic Eagle View Post
Doug,

Project successfully completed ...., time to get back to some serious camping
Thanks much Bob,

Best regards,
Doug
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