Battery "CHARGE LINE" for C-Max keyless

You should have 12V available in your umbilical cord that runs from the RV to the toad.
Any shop can run a wire to your battery from the cord.

If the towing vehicle has a 7 pin plug, there is a 12v dc pin and a negative or ground pin, if the connecting cord is also a 7 pin connector, all you need to do is run a wire from the connector pin 12v dc to the positive battery on the vehicle with an in line fuse of 10 amps, this wire should be a number 10 or lower number, when you stop over night disconnect the umbilical so that the toads battery is not discharged.

If you only have 4 pin connector, you need to convert to a 7 pin, Ford will not do this, they will not be liable for it.

An automotive electrician can install this.

navegator

I would go to an RV dealer. They do this a the time. There should also be circuit breakers on both ends to protect everything. That's what I have on my rig and it works well on a 7 pin to 6 pin cord.

The Ford C-Max offers a hybrid and a hybrid plug-in version. Which do you have? I have a Fusion iEnergy plug-in so I'm not too familiar with the C-Max. Are you talking about your 12v battery, or your HV battery. The solutions presented here can work for your 12v but not your HV.

Google "ToadCharge". If you are the least bit handy, you can install it yourself. RVi also sells a toad charging system. These units do not connect to the car battery until a certain voltage threshold is met on the motorhome side (normally 14V when the engine is running and the alternator is charging).

Thanks for quick replies. It is the car's starter battery that dies, AND my elec connector is a 7 pin (someone told me I wouldn't have known)....

I am on my way to Quartzsite, maybe I can get it done there....in the meantime I am stopping every hour or so.

Appreciate all the knowledge in RV.Net.

We tow a 2014 C-Max Energi behind our Motor Home with a Blue Ox. We do not have any problems and do not have a "charge line." These are the steps we take (following the owners' manual).

After positioning the car behind the motor home, I put the car into NEUTRAL, apply the hand brake, turn off all accessories (including heating, air, fans, lights), and turn OFF the ignition.

Then I attach the Blue Ox compressor. That is it.

rverAnn wrote:
apply the hand brake,

Do not drive off with the park brake on!

OF COURSE, I FORGOT TO SAY THAT! THANKS.