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#Jayco 7 pin trailer plug wiring diagram install#
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Not attending to this is usually the cause of many people experiencing poor performance from their 3-way fridge on 12V. Otherwise the voltage drop in the cable will be too much and the voltage at the fridge terminals will be too low for the 12V element to supply enough heat for the fridge to work efficiently. the engine is running and the alternator is supplying the power for the fridge.įurther, if you do want to run the fridge on 12V (many don't bother) AND you want the fridge to work efficiently, you need to use 6AWG (or 6B&S) cable. So, it is recommended you isolate the +VE wire using a Voltage Sensing relay OR a relay that only activates when the ignition is on (i.e. BUT the fridge will draw at least 15A and will flatten a car battery in 2-3 hours. My towing wiring harness now has a small shock cord at each end, so that if it ever gets pulled out, again. Took me awhile to get it resolved, because of other commitments.
They do not power anything else on the van NOR do they charge the battery in the van. This wiring diagram proved to be correct for our 2015 37FS. But the two wires you have on pins 9 and 10 go directly to the 12V terminals on the fridge. On a Jayco, pin 2 goes to the AUX input of the Setec 12V power supply and battery charger.Īpologies if you already know this. You would probably be advised to use wire about the same size as is on pin 2 of the Jayco plug. Then run a wire from the +ve terminal of your battery via an inline fuse to pin 2. If it is wired as a reversing signal AND you want to have 12V supplied from your tug to provide 12V to the van (to run your lights etc and/or trickle charge your battery while you are driving) then you will need to disconnect the wire presently on pin 2, fold it back and insulate it. I would suggest you get a multimeter or a lamp to check how your tug is currently wired. This pin has two uses, either as a reversing signal, or as Jayco use it, to provide 12V from your tug. Pin 2 on your tug MAY be wired to provide the reversing signal.
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