The starter motor on your vehicle draws a lot of current, as the starter motor ages it draws even more current. This current draw can be so excessive it causes other components to fail to operate, this can be the case with your ignition. the ignition bypass is simply there to channel current to the ignition circuit when the starter motor is engaged. If you've ever encountered a vehicle that the starter motor operates but the engine won't fire until you let off the key.. This a sign the ignition bypass is faulty or non-existent, to remedy the problem we simply run a wire from the "I" terminal on the starter solenoid to the Input side of your ignition circuit aka switch, this will ensure the ignition circuit receives the required current to operate correctly when the starter motor is engaged.
GM used/uses a fusible link on the ignition bypass, this fusible link can blow leaving the IGN bypass inoperable, a simple continuity test can diagnose the problem but since the IGN bypass only has Voltage when the starter motor is engaged it is difficult to diagnose using just a voltmeter, unless you enjoy living dangerously..
GM used/uses a fusible link on the ignition bypass, this fusible link can blow leaving the IGN bypass inoperable, a simple continuity test can diagnose the problem but since the IGN bypass only has Voltage when the starter motor is engaged it is difficult to diagnose using just a voltmeter, unless you enjoy living dangerously..
