Chuck help me understand this. so this does not need a battery? I hooked the engine up to one of my other tenders with a bcr and it did as it should. I heard what sounded like a fan going which I let it do for about 30 seconds than ran it and it went forward neutral and then reverse as it should on my 30" test track. I see looking at my other tender that the black piece that snaps in is for electro-coupler but on mine the yellow wire goes to the white snap piece where here they have a blue wire.
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