I hope this post will help you to stock & locate the right fuses for your Motorhome / Campervan FD19.
The FD19 requires ...
- 7x Standard Blade Automotive Fuses for the Jayco component and (not documented by Jayco)
- An assortment of Mini Blade Automotive Fuses for the Fiat component (see Fiat manual)
Locations and Amperage
1x 40A BMPRO BMS System UNDER THE BED
1x 30A AUX FUSE BOX BEHIND DRIVERS SEAT IN CAVITY UNDER CARPET
4x 20A FUSE BOX BEHIND DRIVERS SEAT IN CAVITY UNDER CARPET
1x 05A FUSE BOX BEHIND DRIVERS SEAT IN CAVITY UNDER CARPET
The Background Story
Since April 2018 I am the proud owner of a Jayco Conquest FD19. Overall I'm happy, BUT at the same time I am frustrated that the learning curve is immense, while the owner documentation is quite complex and severely deficient. So after a few little trips, much trial an error and many emails and phone calls I have finally managed to finally get the big picture on how to manage the FD19 !
Avoiding the 10 biggest mistakes when operating the FD19
#1 Be aware of the Fiat Speed limiter that can kick in anywhere even as low as 35km/h ! - Kick the pedal hard to the floor (you must get beyond the tactile resistance point of the pedal)
#2 Beware of your big foot - You may hit the Gas and the Break pedal at the same time
#3 Be sure you park in gear on slopes - Watch display before you turn engine off !
#4 Look under the van, diminished clearance. Lowest point water tank and retractable step ! Be careful when driving on uneven ground.
#5 Look up ! Your van is 2.85m high, don't damage the top ot scratch the sides (tree branches)
#6 Study the Jayco BMPRO JHUB and budget your energy when camping off grid !
I have checked 2 other motor homes with J35 controllers and neither of those indicate aux power is being supplied from van to house batteries.
Best people who can help you with this is the people at Setec who handle all JHub enquiries and warranty. They are contactable on (03) 9763 0962.
The technical support area at Setec is normally very helpful
I prep for my 7 Sep Service appointment I have now looked at the flashing light of the BMPRO and I couldn’t detect a status flash code that indicates AUX charging when the engine is on. I have checked the behind the seat fuses - all good.
Could you do me the favour and figure out whether AUX goes to any particular FIAT fuse or spare fuse and if yes which one ?
I’d like to check that before I go off grid camping again on my way back from Moree.
Furthermore so far I have never seen a forecast on the jhub tablet that indicates that I get 100Ah out of my battery. Typically predictions indicate that I’m running on about half capacity and that’s even in spite of connecting to the grid where battery should always be fully charged.
So maybe that could be contributing to the disappointing off grid performance (going flat during the night) unless the whole sys is calibrated wrong ?
See also appended email.
Here is what I have so far just waiting on part numbers
The house battery is connected to the fiat management system
Through a lume located behind the driver’s seat in a compartment under the floor
There is a shunt fuse located at the house battery in the rear
There may also be a fuse under the bonnet for the ignition that could blow and affect
Management system ,step ,camera ,etc
These are described as shunts/ circuit breakers
1: 40 amp is there to protect j35 from overload or surge part number( )
2: 50 amp is there to protect the fiat management system part number( 0
1 is the main fuse for the unit and the other is for the air suspension option
(If unsure read the j 35 manual for position of fuses in unit)
Step and camera ,fridge fuses can also be found behind driver’s seat under floor
USB sockets would be through j35