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What would cause a severe battery drain when the factory stereo and overhead dome lights were removed to install touch screen flip down monitor in 2000 Chevy Tahoe LS?

Possible Drain Sources

* Wiring of new touch screen monitor

* Incorrect wiring of the flip down monitor

* Touch screen monitor is in an "always-on" state

Inspection:

* Inspect wiring job of new touch screen monitor

* Use a multimeter to check for voltage drops or high resistance in wiring

* Check fuse box to see if any fuses have blown

* Disconnect touch screen monitor and see if battery drain continues

Troubleshooting

* Ensure that the touch screen monitor is properly grounded.

* If battery drain continues after disconnecting touch screen monitor, the issue may be elsewhere in the vehicle's electrical system. It is recommended to consult a qualified automotive electrician for further assistance.