Have you checked in your owner's manual to see if it's supposed to charge house batteries on alternator? According to the '93 Brave manual, on pg. 2-11, the dashboard switch marked "Dual Batt" should be switched to "Dual" side to charge house batteries on alternator. If it's not working, check all fuses and connections, including battery and ground connections and the battery isolator relay.
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Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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