:tongue:
happy DIYCarrera said:yeongk,
after trace it..let me know ok? will goto find you and need ur help. Ha ha.

howiechoo said:erm, door switch are negative current, while ur signal is using positive current to activate the relay for double signal(most car)...so if u tab it like this, when u turn on double signal and open ur door, minor with fuse break or major with double signal circuit burn.
like that better put delay and diode leh .,.,.,.