I started with the Caspers Hot Air conversion kit 102066. with a single fan. Added Dual Ramargers and started burning out the relay. Added Caspers dual fan relay kit 109069 by adjusting the plug to match the kit 102066. Never had another issue. The Caspers delay relay module 109086 really helps the electric loan on fan start up. Brad
So I think I understand that you started out with the ECM controlling the kit 102066. You later added Ramchargers dual fan kit. The you added the dual relay kit 109069. I can assume that you had to either add a plug or splice and solder two kits together. Any further issues with cooling? How about with AC running?