bobcat 873g glow plugs cycle 30 sec everytime

[873BRAND]

Hey i have a873g bobcat with the deutz engine. My glow plugs cycle for 30 sec everytime. even if i just shut it off. it also beats 3 time at me. they seem to be working the unit starts great in the cold. but normal at 50 degrees would only cycle for 10 sec. anyone seen this issue? or know what controls the cycle time? my dealer was little help thanks

 

[Markle]

My 873, I control glow duration with a toggle switch. That switch is on top left console above bucket leveler switch. My 753 has a relay that controls cycle time, and I'm sure it's keying off a temp sensor. Suggest finding a wiring diagram for your s/n.