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Which Way Should Diode Point on Highlander for Install of Brake Controller  


I need to add a 1 amp diode to my 2018 Toyota Highlander to clear up some errors after installing the Redarc brake controller. I assume the diode arrow goes toward the brake control, but wanted confirmation. Is this correct? Thank you,


Expert Reply:

Yes you need the diode arrow to point towards the brake controller. That will allow the voltage to travel into the controller but not backfeed back on to the Highlander in any way. If you need a diode we have the part # RM-690.

expert reply by:
Jameson C

Jeff H.


The diode has got an In arrow and out arrow. Which one in or out should point to brake controller?

Etrailer Expert

Jameson C.


@JeffH The out arrow will point to the brake controller.

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