Originally Posted by teddyu
After your fuse switch is installed properly, ensure that the ignition key is turn as far off as possible (position 1). In the run position (2) the ignition system receives power even if the auto is not running. JM2¢...
teddyu is correct. I ran my HHR down today because I had the key in the wrong position. I've had it properly set in the past and had no problem.
Refering to the HHR owners manual, there are four positions:
O - Position allows key removal with auto. trans in park. Steering wheel will lock up when turned past a certain point.
ACC - Position runs some of the accessories. Steering wheel is unlocked. Key is trapped.
I - Position runs accessories and panel warning and indicator lights. This is the engine running position after an engine start.
START- Engages starter.
I ran my toad down 'cause I used "I" instead of "ACC".
If your type of brake controller runs off of the toad battery, "ACC" will eventually run the battery down too but not as quickly as "I"