To the OP, id just hook that isolator to the running lights. leave the 4 and 7 pin plugs alone, if your trailer has something special it needs wire up a seperate connector of a different design (3, 5 or 6 pin). while most vehicles are fairly well protected by trailer circuits having their own fuses, the potential is still there for something more serious to happen (like cooking a bcm). from each other with a big relay (aka solenoid or battery isolator). It can be used as a trailer battery charging module. not only does a non standard wired trailer plug cause a nightmare to troubleshoot and correct, with modern trucks having such complex electrical systems there is a lot more that can potentially go wrong. Replacing the Eurovan Camper House Battery Relay (Camdec 97226) with another. Battery isolator (or split charge relay) allows an auxiliary battery to be charged by the vehicles. if i had a nickel for everytime i fixed electrical issues from someone wiring a trailer plug whatever way they felt like, well, id have a whole lot of nickels. Seriously, dont modify your trailer plug wiring, there is a standard for a reason. might be fine if the trailer has no reverse lights, but if you hook onto a trailer that does have reverse lights after modifying the trailer plug wiring, well now you will be driving down the road with the reverse lights on. If your truck has a trailer plug it is one easy and cheap method to consider.Click to expand.what wire are you supposed to unhook to add a switched power wire in? the aux 12v pin will be used already, leaving the only option to the reverse light pin. I also plan on installing solar but for the time being this system works and hasn't failed me. I recharge by batteries after a trip when I get home using NOCO Genius 7200 which is great. I only use this setup for long travelling days to allow my fridge to run on 12V and maintain the batteries. I have checked the voltage while the truck is on and at my alternator I get around 14.2 V and at the camper batter it is 13.5 V, so yes it is charging but it is slow. 12V 140A Professional Split Charge Dual Battery Isolator Set HC Cargo VSR Voltage Sense Relay For RV Yacht Camper Van Motor Homes 1 X Crimp or solder ring. However, the connection is right below where I attach my stairs so I can't really miss it. They can be mounted in any orientation and are. Intended Applications: RVs, vans, truck campers. I just always remember to unplug it at camp. The Isolator Relays are ignition protected, so they can safely be mounted in a convenient place near the battery. voltage level for connection and charging of the auxiliary battery to the main battery for charging. My camper came with a plug that was setup to hook into the trailer plug so it works for me. ALL STAR TRUCK PARTS 12V 140 Amp Dual Battery Smart Isolator - VSR - Voltage Sensitive Relay Specially Designed for ATV, UTV, Boats, RVs, Campers 5th. Yes, it is not the best, but for the time being it works. I recently purchased a camper and for the time being I just tie into the trailer plug, if your plug has an always hot connection (6 or 7 pin plug). You really need to strongly consider an isolator relay of some sort if you are going to connect the two systems together and travel that way, or you're asking to be stranded. If you were to connect directly to the alternator, that wouldnt be a problem, but I have no idea what the long-term ramifications of that might be. When you hook up the battery-to-battery leads, Your camper battery is going to suck all of the voltage out of your starter battery, and your truck won't start. Your fridge has been running on propane, but your water pump, lights, etc, have been draining your camper battery. Here's why: You've been parked for a few days. The dual relay panels include an ignition interlock relay that opens the power circuit to the chassis battery relay when the ignition is turned on, to prevent. If you simply run a pair of fat wires from your starter battery to your camper battery (please please put a fuse in it) then you can expect 2 dead batteries, WHEN you forget to disconnect them when you get to camp. If I understand you correctly, you could be about to make a mistake that will strand you at camp.
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