"Assume" chassis fuses are located in same area for all early Alpines-- check several switched and unswitched fuse boxes, under the dash behind the plastic panels, in front of the passenger seat. Fan is from a mid 90's econoline Ford van--match it at NAPA. Fan is located under dash on interior side of bulkhead, just to the left of the aforementioned fuse boxes. Fan resistor pack is on the opposite side of bulkhead from fuse box location, up under outer cab cowling, below windshield. Based on earlier posts installing valves is probably a good idea but you have to check the short stub hoses between the h-valve control and the core itself. Based on the h-valve design, the hoses between the h-valve and the rear engine will always feel warm under ops.
2003 40' MDTS
Garden Ridge, Texas