Start Circuit( Old Alternator & New IECU- EC160B/180B/210B ) POWER FROM BATTERY 80A F16 15A F30 15A POWER FROM BATTERY RELAY to VECU JA21 POWER TO IECU CLOCK 1 PT150 PT150 RE3101 B+ INDI AMP START A/S T/E L 3 2 AH to Air Heater 4 1 1 12 7 9 8 AUTO GREASE CONTROLLER B+ JA61 WB 2 0.75Y 3 0.75B 5 4 0.5L 0.5W 6 to VECU SL JB2 JB9 A/C ES D+ from safety lever to VECU to VECU to Air Contioner to Relay EMS power W M - + JA7 4 to VECU B- Volvo Construction Equipment Customer Support UPDATE - EC160B~460B - 20 40A 40A 40A 2 3 A OFF ON B+ BR R1 R2 CA CC M IC Regulator