Head Unit Resets on Bass Hits

Symptom: Display goes dark and restarts during heavy bass. Everything else normal.

Cause: Ground wire carrying current from head unit (and possibly antenna, backup camera) can't handle transient demand. Voltage drops on shared ground, triggering undervoltage reset.

Fix: Run dedicated 16 AWG ground wire from head unit chassis directly to chassis ground point. Do not rely on harness alone for ground. Some harness adapters have marginal ground wire quality.

Also check: constant 12V wire. If fuse protection is undersized, transient voltage drop on yellow wire triggers reset.