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Hi, I am not sure which specific BCC (Battery Control Centre/Cabinet) you have on your Hurricane so this may not be useful for you, but try doing a Google search on “FW221 BCC” which is made by RV Custom Products and the free PDF document operating description and schematic you can obtain on line might be close to what your coach uses (it may not of course too). It is exactly what is in my 2013 ACE 30.1 and I have seen other forums where it is used in many other coaches and years as well. Note that the REV B schematic includes a lockout relay which prevents the accidental disconnection of the chassis relay (i.e.; child operating the chassis switch by the door) while the engine is running. Also note that Thor has a recall out on this BCC because the chassis latching relay can fail open while driving, which stops the engine and could result in a serious accident. The recall describes a simple rewire on the external terminals of the BCC. If nothing else the description of this BCC operation and its various relays is very useful for owners to understand how the coach, chassis and interconnect relays all operate. Hope this is helpful.
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