The unit has 4 burners then a 24" griddle and then 2 more burners all of which are gas on top of 2, 30" gas ovens approx 8 years old. The 4 burners click and light. The far right 2 don't. Viking sent me 1 spark module and 2 igniters. The Spark module is blue with the electric pins on it. I cannot locate where it goes inside the unit. Please adise. Part#VKPA020041 by Tyronics.