glow plug solenoid problem
 

94 7.3 idi turbo the truckk starts fine when wait to start light goes off, new glow plugs,new solenoid,but the solenoid keeps relaying long after truck is running,causing the solenoid to burn up,checked harness all good,dont know where to go from here,at seventy dollars a pop for solenoids,im goin broke,any sugestions please:argh::humm: