12 V. outlet only shows 11 volts

[imolared]

Hello Again,

I have to say I wish I knew about this forum years ago. The help and suggestions here are GREAT!!!!

21012 3100 RL

The 12V. outlet for the TV in the bedroom only meters 11 volts. The 12V. outlet in the garage shows 13V. Due to the low voltage the TV does not run nor does the 12v usb adapter I use to charge the cell phone.

The wires are white and white with black stripe. The 12V. outlet in the garage has two sets of wires connected, both are white and white with purple stripe.

Any suggestions on what is happening or any suggestion on where the wiring (white with black) goes?

thanks,
-imolared