[The Aviator]

Hello everyone,

This post is mainly targeted at those with a UK or European spec CX-30 but all comments welcome.
Take a seat.
I took delivery of my 2022 CX-30 2.0 'Skyactive X' last October and one of the first jobs I did was to fit a towbar (Witter) and electrical kit (Mazda kit P/No. DFR5-V7-780).
All went well until I connected the Touring Caravan (Camping Trailer to our North American friends). Everything worked fine apart from the ignition switched supply to the Caravan fridge on Pin 10 of the EURO 13 Pin socket.
Just wondered if there was a slight chance that someone on this forum has experience of this, I'm assuming that the Mazda kit quoted above is only sold in the UK , Europe & parts of Asia. As part of my investigation I've noted the following:

• Driven the car with a Multimeter (DVM) rigged up so I can monitor the battery voltage - Around 14.4V constant with engine running even with other equipment switched on. This would rule out any issues with current 'EURO 6' Spec engines with so called 'SMART' alternators (to be honest I thought this would be the problem as I've seen issues with CX-5 models battery voltage dropping to 12.4V when towing. Given some volt drop in the cable run, the fridge may only be receiving 12.1V so would cut out).
• Rechecked all wiring (The Mazda kit gives assembly routing details only, it does not give out wiring loom harness 'pin to pin' details so this task has been limited to basic checks).
• No recoding is called up in the instructions (as stated by the local dealer), apart from recalibration of the 360 Camera (which I haven't got fitted) on reconnection of the battery.
• Mazda state that when testing the electrics, a representative 'Load' is required on all connector pins (what better load than the caravan equipment itself!).
• Changed the Caravan last December and still have the issue when tried on the new caravan.

Just to add, I've not really used the caravan(s) over the winter much (March as I write this), just short trips out so no real urgency so far to sort out the issue, normally we run the fridge on mains electric to bring it down to temperature which is OK for a 3 Hr drive (Fridge is cool and everything remains frozen).
Also, I appreciate the warning in the Mazda electrical kit instructions regarding fitting by a suitably qualified person. Although I've recently retired, I started life serving an apprenticeship as an Aircraft Electrician followed by quite a number of years in this trade in the UK and overseas before moving on to the design offices as a Systems Engineer, so to be honest there was nothing I found difficult in installing this kit (strangely the local Mazda agent has asked me questions about towbars as they very rarely get asked to fit them!).
I have one more check I want to do and if that fails I'll wire in a new battery feed from a split charge relay to pin 10 of the socket.
Sorry, bit of a long post .
All the best,
Chris

 

[lupineblue]

Everything worked fine apart from the ignition switched supply to the Caravan fridge on Pin 10 of the EURO 13 Pin socket.

What's the problem you're seeing with Pin 10?
It's supposed to be ignition-switched but you're not getting any power at all?

 

[The Aviator]

Yes, I should be seeing about 13.8V (ish) on PIN 10 of the 13 PIN Euro connector with the engine running.
I've contacted the supplier of the wiring kit to Mazda and although the installation instructions show a connection to the 13 PIN connector it appears this is not fully wired as the UK is the only country in the European market that requires a switched connection to PIN 10. Solution is to use an 'Extension ' kit to wire in PIN 10. I can get the parts from other suppliers for a lot less money so a job for next week! The job is quite straightforward just need to run a cable through the engine / cabin bulkhead and on to the rear trunk area.