Negative Battery Disconnect – False Ignition On

Last Updated on May 20th, 2020 by Erica Cinner

This diagram is meant to solve for false ignition messages triggered by a negative (Ground) battery disconnect switch. When the chassis is disconnected from the negative terminal at the battery, the chassis becomes positive. Most ignition wires rest at negative, but when the chassis is positive, they rest at positive. This is what causes the…

False Input Trigger After Ignition Off

Last Updated on May 15th, 2020 by Erica Cinner

This diagram is to prevent false input triggers directly related to Ignition off events. Some input monitoring scenarios “back feed” during the Ignition off state. Installing a relay exactly as outlined here will make false triggers, caused by ignition off events, electrically impossible. While it is possible for 86 to be connected to accessory, it…