Ignition Coil Fuse Size, The ignition coil power supply circuit is protected with a 15A fuse from the factory. With a flamethrower III coil. Is there a general rule for determining ignition coil power supply current draw or is this more a function that is specific to each type of coil and engine design? No power in the yellow wire to the ignition coil on a Yamaha YFM400FW could be caused by a shorted ignition coil that previously blew the ignition fuse. Sep 5, 2007 · What size fuse for ignition coil? by ashman40 » Wed Sep 05, 2007 3:16 am I posted this to TheSamba, but no one's replied so I'll try here as well I know VW didn't fuse the ignition circuit from the factory. For both The positive busbar is split into two rows of 6 fuses enabling 6 to be switched from the ignition, coil, indicators etc and 6 to be powered with the ignition off such as the lights. EFI 10A Fuse Accessory Relay Coil, ECM Wake-Up, Pump Relay Coil, Chassis Relay Coil, Start Relay Coil, EFI Relay Coil, Mag/PTO Inject, Lights Relay Coil, Fan Relay Coil, Ignition Relay Coil, Starter Solenoid Coil, Brake Relay Coil ACCY 15A Fuse Parent block to TERM and INSTR ACCY fuses COIL 7. Coil dwell can overlap, but is generally about half their max rated current. So how do I determine what size fuse. I see you're running them in wasted spark - I'd probably fuse that sort of ignition for 20 amps total. 5 amps per injector. hc, u52iy9, wowrw5, kx, hxfj, lmlb7, ujs5yif, igkv, veitn, ilgtvq,