Auto dimming mirror

Rangerdoc · #1 04-05-2010, 05:20 AM

Just installed a new autodimming rear view mirror. I tapped into the radio power line at the fuse box. Mirror works fine but two days later and my battery is dead. Does anyone know is there always some drain on the radio power line or does it shut off completely when the ingnition is off? What circuit can I use as an alternative. Thanks Dave

Jp7 · #2 04-05-2010, 05:31 AM

Quote:

Originally Posted by Rangerdoc

Just installed a new autodimming rear view mirror. I tapped into the radio power line at the fuse box. Mirror works fine but two days later and my battery is dead. Does anyone know is there always some drain on the radio power line or does it shut off completely when the ingnition is off? What circuit can I use as an alternative. Thanks Dave

The problem is that you used a wire that is hot at all times. Try a wire that is only hot with the key on. PCM power should work.

01_ranger_4x4 · #3 04-05-2010, 05:32 AM

did you wire it into the radio constant power or the ACC power?

Rangerdoc · #4 04-05-2010, 06:16 AM

What does PCM stand for?

STL · #5 04-05-2010, 07:18 AM

Powertrain control module

Use a 12v switched power source

Tom · #6 04-05-2010, 08:18 AM

Quote:

Originally Posted by Rangerdoc

What does PCM stand for?

As STL said, it stands for Powertrain control module. In the future, just hover your mouse over acronyms like PCM and it will tell you what it stands for.

Rangerdoc · #7 04-05-2010, 08:26 AM

Thanks guys I'll try changing the power lead for the mirror tonight!