03 4runner hu install

[sumo]

hello. i just installed a radio in my 03 4runner and when i put everything back together, i noticed that my rear defrost and my rear wiper and sprayer don't work. i back tracked and everything and fuses were ok. except there were 4 plugs in the back of the radio and i only used 2 of them for power and speaker connections. i was thinking that maybe i have to have them hooked for those accessories to work. if anyone can help me get them working again, please let me know.

tia,

sumo

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