Sorry about giving this thread a Necro-Rez, but I've been having the dreaded "Intermittent Heater-Blower-Fan Syndrome" for about a year, on my 1991 XJ Laredo(4.0L, AW4 auto-trans, NP242 xfer-case, D30-front, D35-rear, etc., etc., etc.), and found, in my case, it was just the connectors to the...