Thanks to Bob from my original post on 8/5/19 for the suggestion of checking for a chaffed wire causing my temp light to come on. I checked and the positive battery terminal was frayed and I taped with electrical tape and also discovered the tail lights had not been reconnected at some point in time. I connected these and started tractor and no temp light came on. I ran for 1 hour and no temp light during this time. Thank you sir for your advice. I am no mechanic, but feel a little better about my mechanical skills with your advice and help. I prevoiusly changed the oil and air filters and engine oil with the light continuing to flicker. Thanks again sir, I am glad we have this website for assistance.