so i just got done replacing the blower motor in my Lennox GF4-110M furnace and went to go light it and now when i hold my pilot reset relay and light the pilot it fails to go to the on position and instead goes back off

i read the old manual and it says its my thermocoupler or my relay but i need a special adapter (i'm sure i'll never find) to do a test to find out which one it is

but my biggest problem is where would i get a new thermocoupler or pilot reset relay at

any help would be great... getting tired of my space heater