The blue wire that goes into the voltage regulator gets cut.
That blue wire on the harness side now activates the relay via terminal 86 , and the regulator side of the cut blue wire now goes to relay terminal 30 on the relay.
The harness side of the blue wire is where the regulator senses voltage, so now instead of sensing that voltage through all that harness it sense it directly from the battery.
Terminals 85 and 86 close the relay when you turn on the key.
87 and 30 are where power passes through when the relay is activated.
This gives a much more precise reading of battery voltage for the regulator to sense from, instead of it thinking the voltage is always low because of a voltage drop across the harness.
Use a non resisted 4 terminal relay.
Works great.
View attachment 1715020926
