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Subject Topic: Car won`t talk to the caravan Post Reply Post New Topic
07/6/2021 at 7:36pm
 Location: Lancashire
 Outfit: Swift Conqueror 530
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Good evening, newbie here and just come back from our maiden voyage with our new (to us) Conqueror 530. so if my question is stupid I will apologise now.My question is: when I hitch up to my car everything is working, lights, indicators etc. However, on the control panel over the top of the caravan door is showing a green light in the caravan image and an amber flashing light in the car image...any advice would be most welcome. Thank you Roy


07/6/2021 at 9:20pm
 Location: chesterfield
 Outfit: Ford Kuga AWD & Lunar Clubman SI
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you should turn off your caravan electrics the fridge should work and the lights thats all you need to worry about


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07/6/2021 at 10:12pm
 Location: East Herts
 Outfit: 1992 Elddis Wisp 450CT + X Trail
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Quote: Originally posted by RoyM on 07/6/2021
Good evening, newbie here and just come back from our maiden voyage with our new (to us) Conqueror 530. so if my question is stupid I will apologise now.My question is: when I hitch up to my car everything is working, lights, indicators etc. However, on the control panel over the top of the caravan door is showing a green light in the caravan image and an amber flashing light in the car image...any advice would be most welcome. Thank you Roy



No such thing as a stupid question Roy, so no apology needed. We were all newbies once. Anything you need to know just ask, there's plenty of knowledgeable people on here willing to help, that's what the forum is for. Welcome aboard.


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Best Regards,
Colin


via mobile 07/6/2021 at 10:50pm
 Location: Lancashire
 Outfit: Swift Conqueror 530
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Thanks for your reply, may I ask when I am travelling with the caravan should the leisure battery receive charge from my car and if it should. How would I know?


via mobile 07/6/2021 at 10:54pm
 Location: Lancashire
 Outfit: Swift Conqueror 530
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Thanks Colin. My wife and I loved our first trip...I have to be honest we were a little anxious travelling and worried about holding other drivers up


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07/6/2021 at 10:59pm
 Location: East Herts
 Outfit: 1992 Elddis Wisp 450CT + X Trail
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Quote: Originally posted by RoyM on 07/6/2021
Thanks for your reply, may I ask when I am travelling with the caravan should the leisure battery receive charge from my car and if it should. How would I know?



The leisure battery should receive charge from the car as long as you have a 13 pin socket on the car or two 7 pin ones. I say should receive a charge because it depends if the socket has been fully wired or not. Some installers cut corners and don't wire all the pins. It's not really that easy to tell either because there is not usually any indication.


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Best Regards,
Colin


08/6/2021 at 12:28am
 Location: Lichfield
 Outfit: Coachman Amara 450
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There is only one way to check if the caravan leisure battery is receiving a charge from the car and that is with the aid of a voltmeter. Leave the car ignition in the 'OFF' position and put the two voltmeter prongs on the leisure battery and the reading received is the battery voltage which should be around 13 volts for a fully charged battery. Switch on the car ignition and start up the engine and take another reading exactly the same. The reading should have increased to around 13.8 to 14 volts which proves that the leisure battery is receiving a charge from the towing vehicle.


via mobile 08/6/2021 at 7:37am
 Location: Lancashire
 Outfit: Swift Conqueror 530
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Thanks Tango most helpful. Cheers Roy


08/6/2021 at 7:44pm
 Location: West country
 Outfit: Mondeo
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I think your issue might be the habitation relay. This cunning little device in the caravan does this.

When plugged in to car without the engine running, the caravan internal 12 volt circuits are fed from the car battery and not from the caravan battery.

When plugged in to car with the engine running, the caravan internal 12 volt circuits are isolated and the fridge is fed from the car and the caravan battery is charged from the car.

When not plugged into the car all the caravan 12 volt is fed from the caravan battery as you would expect.


via mobile 08/6/2021 at 11:19pm
 Location: Lancashire
 Outfit: Swift Conqueror 530
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Thanks Nav most helpful. Roy


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09/6/2021 at 12:37am
 Location: None Entered
 Outfit: None Entered
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due to the long wire length between the car alternator and the vans leisure battery it will never receive a full charge from the cars alternator.. the voltage drop is too high..

trog




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