ykchong4 Posted March 20, 2021 Report Share Posted March 20, 2021 I've a Links Thunder and use the diagram hold power with low side switching, but the main relay + didn't output Low signal to activate the Main Relay when the IGN SW on, what could be the problem? Do i need configure the MainRelay+ to output Ground or the Thunder will set it to Ground automatically when IGN SW on, and then set to High when keep alive time finish? Quote Link to comment Share on other sites More sharing options...
Adamw Posted March 20, 2021 Report Share Posted March 20, 2021 The only thing you need to do in the software is set the main relay driver to "ECU hold power", no other configuration is needed. Does your ECU power up when you switch on the ignition switch - Blue LED on? Quote Link to comment Share on other sites More sharing options...
ykchong4 Posted March 20, 2021 Author Report Share Posted March 20, 2021 ok, i'm found this Main Relay Driver didn't switch ON to Hold Power funtion, working as expected now, thanks. Quote Link to comment Share on other sites More sharing options...
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