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For What It's Worth
Flash Alert! Dual Battery Relay

I have an 86 weekender with factory aux battery relay. The part number you give above (411 915 511B) is correct. Rated 30 amp. Weekenders did not have the 3-way fridge, just electric fridge which plugged into a socket in the aisle under the passenger seat. Currently I have a power patrol SLA 44Ah aux batt hooked up, fits fine in compartment with no mods.
Mark
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I have a 1985 Westy Vanagon full camper including fridge and my relay in the empty battery compartment is Part Nr. 411 915 511 B. How do I connect a second battery to that? Any help would be much appreciated.
Roger
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This clears up my confusion as many insist all westys have that set up. I ended up doing a manual switch set up, and running some conuit under the van. The other thing you may want to look into is that the compartment under the drivers seat seems to be smaller also.
Rob
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Use the fridge relay to turn on a 40amp relay.
Jeff
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I am on my fourth camper but this time instead of self converting I am refurbishing a T24 Leasurehomes Hightop. I will revert the existing twin battery system to one which has served me well from the start. I simply connect the two positives with a meaty cable and fit an isolator in each earth lead. I then put one of the keys away in the van for emergency and swop the remaining key from one battery to the other when arriving at my destination. This way If I run the connected battery flat I can simply change over when I want to move on. And if I should finish up with two flattish batteries I can fit the spare key and get a start. I aam informed by other qualified electrical engineers that this is not good practice but have not been discouraged so far.
Kengineer
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I just confirmed the Part number on the factory installed relay on my 85 weekender. It is the same: 411 915 511 B
Joel the Llamaman
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