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Wednesday, January 7, 2026 • Copyright © 1999-2026 the12volt.com, All Rights Reserved • Privacy Policy & Use of Cookies
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verify all wire colors and diagrams before applying any information.





but still no unlock or lock

originally read that the konas were one wire lock but i think bcm is stealing current and need to do this. however this will only be the drivers door and i want the passenger door to unlock as well that way i dont have to get in first to let passengers in so i was thinking now not using the internal relays of the brain but adding
2 additional relays in each door to break the bcm connection.
havent got outside yet but i was thinking.
both relays pin 85 to ground.
relay A and relay B pins 30 to respective side of motor wires A/B
then pins 87A to the bcm side of their respective wires A/B
(this maintains oem connections basically the same as the above diagram)
and then pins 87 will be fed by the polarity reversal pair i have already wired up.
here's where my thinking could be flawed.
pins 86 on both the "bcm - brain takeover circut" are fed by the lock and unlock wires paired from the brain protected by a 1n4001 diode to prevet a back feed into the brain. this waay during any lock event from the brain it breaks bcm and hands to brain.
this is where it gets tricky but i still believe a couple of diodes off of the lines where i tap into the lock and unlock lines to feed the polarity reversal circut would fix it but im not 100% sure i would have a back feed issue anyways as long as i tapped the line befor the diode that i alreaady used to prevent backfeeding.