Just saw a photo on another site dated 1978 that shows side view of a UP DD-35. The #1 engine had the typical dynamic brake blister with the sheet metal door equipped with two latches that would provide access to the three extended range contactors. The #2 engine dynamic brake blister did not have this feature. Each brake grid would need its own set of shunting contactors for extended range operation. Any one familiar with design or maintenance of this locomotive that may have an answer?