I ride a 1990 FXR Lowrider and Monday morning as I was getting off the freeway to my house the oil light came on indicating low oil pressure. I got off the bike and went up to the local shop and changed the oil and filter. Started the bike in the garage and the oil light flickered on and off, still suggesting low oil pressure. My biggest fear is oil pump has taken a shit and needs replacing money wise. What else could this be? Anything helps and thanks you guys.