120A - 200A relays (12V or 24V)
where cost is the overriding factor then simply fit a relay with a direct ignition feed, no frills.
Part Number R12120 R24120 R12200 R24200
Coil nominal V 12 24 12 24
Contact current rating A 120 120 200 200
Active switching current A 120 120 200 200
Active switching power W 1400 1400 2800 2800
Coil rating continuous W 2.4 2.4 2.4 2.4
Ignition Voltage required 8.0V - 15.5V | 16.0V - 31.0V | 8.0V - 15.5V | 16.0V - 31.0V
Ambient rating deg C -40 - + 85
Relative humidity 85% at 40 deg C
weight 90 grams