Do I need load resistors when disconnecting the rear speakers?

[whjeffs]

2026 XLT 2.0 EB non B&O.
Just installed the 10” Kicker Hideaway behind the rear seat. I’m using the DC offset signal sense for turn on. I have the high level inputs connected to the rear speaker wires but I disconnected the rear speakers when I did this as I don’t want to use them. I did set the EQ to flat in Forscan.
First time powering everything up the sub would not turn on. The power light just kept slowly flashing red. I switched it to 12v turn on and jumped the remote wire to the 12v+ and it came right on. Put it back to DC offset and the next time I tried it it came on and worked fine.
So I’m wondering if not having the speakers connected was causing the issue maybe the ACM thinking no speakers connected and shutting off the output? Or maybe something wrong with the HS10? I’ll see if it happens any more but if load resistors might be needed I’ll go ahead and add them.

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[Carlitos_92]

The below is copied from the internet, but I'd look at how you have the 12V to the amp wired, or that last bullet point about the input sensitivity. The PWR light won't usually flash red just because the head unit shuts down the output to the rear.

FYI the DC offset setting will likely have that HS10 turning on when you might not want it because of random noise from the audio system. it is usually recommended to use the remote 12V signal. Good luck with your troubleshooting.

A flashing red light on your Kicker HS10 means the internal amplifier has entered Protection Mode. This is usually a safety response to electrical issues like low voltage, incorrect wiring, or a short circuit.

Common Causes & How to Fix Them

• Low Battery Voltage: The HS10 requires 10V to 16V to operate. If your battery is dying or your alternator is failing, the amplifier will go into protection.
  • Fix: Check your vehicle’s charging system. With the engine off, the battery should read around 12.6V to 12.8V; with the engine running, it should jump to 13.8V to 14.4V.
• Loose or Bad Ground Connection: A poor ground wire prevents the amp from discharging electricity safely, causing it to trigger the safety light.
  • Fix: Ensure the ground wire is connected to a bare, unpainted metal surface on the vehicle's chassis, and that the connection is tight.
• Short Circuit in Speaker Wires: If the positive speaker wire accidentally touches metal or shorts out somewhere in your vehicle, the amp will protect itself.
  • Fix: Disconnect the wiring harness entirely. If the flashing stops, inspect the speaker wires for pinches, cuts, or exposed copper.
• Incorrect Input Voltage Switch: If you are using speaker-level inputs, the high/low auto turn-on switch might be set incorrectly, leading to voltage faults.
  • Fix: Toggle the voltage/input switches (High/Low) on the side of the unit to see if it clears the error.