Electrical Ignition Time Delay Module For John Deere 2500 AEB 345 GX345 425 445. Brand New. C $20.84. Top Rated Seller. Was: C $21.94 5% off. or Best Offer. +C $51.64 shipping. from China.. Minimal amount of tools required, and it shouldn't take more than 1/2 hour at the most if the older one was strapped-in deep. It's located on the Lower Left Rear corner of the Engine, near the Fuel Filter. Some accounts suggest these begin failure every 3-years. Mine began failure after 6, but I do probably not mow near as often/much as they do..