8
WIRING DIAGRAM
Main
Main
DC-DC
DC-DC
AUX
AUX
Screen
Screen
DC-DC
Solar
+
+
+
–
–
–
–
–
+
+
+
Unit Wiring
Blue: +12V/24V Start Battery
Red: +12V Auxiliary Battery
Black: Common Ground
Yellow: Solar Positive Input
Green: Lithium profile
MST (Modular Sense Technology)
The Thunder DC-DC now has MST (Modular sense technology) that allows multiple
Thunder DC-DC's to be added together to increase the amperage output.
The Thunder DC-DC automatically senses the addition of an extra unit fitted and
synchronises the charge algorithm to work as one unit.
You can add as many units as you like.
* NOTE:
Only connect the Lithium charge wire (Green) if you intend to charge a lithium
battery pack as this will cause damage to alternate battery chemistries.
*
NOTE:
When you connect two or more TDR02021’s together, one unit will become the source unit and
one will become a slave unit. This means the source unit will carry the majority of the charging
load output and the slave will help when needed.
This will all depend on the state of charge of your auxiliary battery. When using this build,
you will need to fit the source unit display, as it will show the bulk of the charge output.
Solar
