anyone ever install a LOC in a lexus is 300?

[BZA 10+ year member]

i tried tapping the back speakers and it didnt work with 2 locs. so my thought was the speaker wires arent drawing enough current. so i took the stock hu out and tapped those speaker wires and it still didnt work! both the sub and amp were tested and they work fine. its just the LOCs. anyone have any suggestions?? (besides buy a new hu).

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[skylineTT 10+ year member]

lol i just tap it with RCA cable and run the RCA to the amp.. not hard at all