aristonic

I replaced my old battery in my 400 with an OEM Lexus one. As I was installing it, I connected the positive wire to the negative post and viceversa (Lexus accidentally put the red cap on the negative post, and because I didn't bother actually looking at the battery prior, I connected the wrong terminals). When I did this the horn started blaring (not like an alarm) so I disconnected and found out I had connected the wrong terminals. I flipped the battery around, connected the correct terminals and now I don't have any power whatsoever. This leads me to believe I blew a pretty big fuse. I'm sure this isn't the first time someone has had this problem, so if anyone has any suggestions on which fuse(s) I probably blew, I would greatly appreciate some guidance. Thanks in advance.

Mr Jokster

iTrader: (8)

Just check the box and look for the blown fuse. I wouldnt doubt if multiple fuses were blown, and no, this isnt the first time. Some searching will give you some leads to other effects.

Trunkmonke

If you lost all power after the backwards connection I'd start in he fuse block just in front of the battery. Normally you'll blow the ALT fuse (usually a 120 or 140 amp fuse). I'd also check all the little guys in there once that ALT fuse is good. The ETCS fuse is also known to blow with a backwards connection. GL, look forward to an update.