2000 Ford F250 super duty 7.3 power stroke

[FED 387]

sound might be under radio didn't look that closely but I was pissed ---by disconnecting and reconnecting both batteries I am essentially re-setting every thing ---you would think that the lights locks etc would come back on maybe not enough voltage turn the starter but the clicking sound is new never ever have heard that before--- this is a one owner truck I have owned it since new no MODS whatsoever chips programmers remote start stuff nothing so this was kinda surprising--- I changed the batteries about 5 years ago they were getting old and going into winter did not want any surprises/problems and at that time no of these problems arose---FED 387