What color is hot on a kenwood kdc-s2009 - Kenwood KDC-S3007

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Kenwood KDC-217 (kdc217) Single-DIN Car Stereos - Sonic Electronix

https://www.sonicelectronix.com/item_1209_Kenwood-KDC-217.html

Detachable Faceplate; Maximum Power: 45 Watts x 4 (RMS Power: 22 Watts x 4); Preamp Outputs: Rear; System Q Sound Control; LCD Display: Color with ...

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If you have a separate 'power' or sub-woofer amp, check that it still has power and did not blow a fuse. Is there an internal selection inside the unit for enabling the internal amp vs an external amp? Some will disable the internal amp using a setup setting, and just provide low level output that is expected to be amplified by an external amp. If it 'forgot' you might have to set it to use the internal amp again. Or vice-versa, depending.

The installation instructions including wiring diagrams begin on page 20 of the manual.

Be sure to rn new wire to speakers. Depending on vehicle you are installing them in, it may have a factory amplifier. I can try to help you with this if you please tell me your year, make, and model of your vehicle. Thank you.

4ohm is what they test them at

Yellow is the +12 volt supply, Red is the +12 volt ACC (switched). Here is a link to your Kenwood KDC-S3007 manual. Reference page 16 for wiring diagram. Hope this helps...let me know, please.
http://www.kenwoodusa.com/UserFiles/File/Global/Consumer/Manuals/kdc-s3007.pdf

http://inform3.kenwoodusa.com/manuals/kdc-s3007.pdf

download the manual here from the kenwood service site.
Page 16 of the manual has the color codes for the wires.

No, you have the battery wire hooked up to the ignition switch.
Here is the owners manual with wiring diagram.
http://inform3.kenwoodusa.com/manuals/KDC219.pdf

Yellow wire must go directly to fused HOT (battery).Not through ignition switch, red goes to switch.
Good Luck
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