Innovate Motorsports LM-1 Digital Air/Fuel Ratio (Lambda) Meter User Manual
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Connect one terminal of the relay switch and relay coil to switched 12V (number 15 on European
cars). Connect the other switch terminal to the 12V input of the LM-1. Connect the other end of
the relay coil to the starter solenoid wire (number 50 on European cars). When the starter
solenoid is operated, the relay will switch off. In running condition, the relay coil current will flow
from 12V through the starter solenoid to ground. The relay coil current is normally far too small to
operate the starter solenoid.
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