My transmission (TH350C) has been spitting transmission fluid in reverse, so bad I lost reverse gear. I couldn't find it but today my buddy came by and he got under there.
Blown reverse light switch. Fortunately, I had another th350 sitting around. We replaced the switch with a plug from the other unit. Fixed but I dont have reverse lights, fine with that for now. Thank God for friends with more knowledge than yourself.
Dead switch (he crushed it taking it out)
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Old transmission with plug that we cannibalized
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