Oil light and spedometer question

I’m working on a 06 Outlander 400. Replaced the thermostat and fuel pump, Cleaned and sealed a leaking speed sensor. Now the oil light is on and that is the only thing that lights up on the cluster. I have 40psi oil pressure on a manual gauge. Unpluged the sensor and grounded it, no change. All worked fine prior to me doing this. What do you think I disturbed???