I usually pay the dealership to change my fluids but I wanted to save some money and am trying it myself. I have a 1999 dyna wide glide and ordered the repair manual but it wont be here for about a week. I did the primary fluid change and the engine fluid change but am stumped on the transmission. I dont know where the drain plug is. Ive searched and read a lot of conflicting answers all over the internet. The pan on bottom has two bolts, one on the left side actually on the side near the primary, and one on bottom near the transmission or rear brake reservoir. I would say the one by the rear brake reservoir is the tranny drain plug. I did already change the engine oil and drain it using the left side drain plug on the side of the pan. Problem is when I started to drain the right side drain plug on bottom by tranny fill plug or rear brake reservoir it looked real clean and i was afraid I was draining all my expensive engine oil. I should have waited for the manual but didnt and now I need your help. Where is the tranny drain plug? and when I drain it it wont drain the engine oil will it? I know I have read they are separate but the oil I was draining looked real clean and I dont want to drain all my expensive synthetic engine oil. Sorry for the stupid newbie rookie question. Twin cam 88 motor.