Jumped off truck and did - to + . I already knowi a
Ok, this takes a lot for me to admit but I screwed up the easiest and most common procedure besides filling the tank. I was in a hurry and hooked + to - when trying to jump off, it took me a few seconds to realize it a after I saw more sparks than usual at the running vehicles + post. I immediately removed the cables and hooked them up the right way. So to be clear I didn't try to crank the Land Rover with the cables hooked up - to +.
Now with the cables hooked up correctly it turns over but no start. I am getting two codes, one was there previously (P0327 knock sensor) and the new one is P0560- system voltage.
I reset the inertia switch and still no start.
Can anyone offer any insight here? Anyone brave enough to admit that they have done this and how they fixed it?
Thanks!
Now with the cables hooked up correctly it turns over but no start. I am getting two codes, one was there previously (P0327 knock sensor) and the new one is P0560- system voltage.
I reset the inertia switch and still no start.
Can anyone offer any insight here? Anyone brave enough to admit that they have done this and how they fixed it?
Thanks!

Frank, try all the ideas the guys have already mentioned first but unfortunately the battery polarity reversal normally 'cooks' the engine ECU at minimum, maybe some others.
Good luck with your endeavours and hope you sort it out cheaply.
" Funny how no one has mentioned the alternator yet."
I remember doing that back in Post #12, I must be writing in Chinese.
And YES you can have the alternator benched tested. It's a very simple process any Napa, AutoZone, etc can do for you for free. Remind them to be sure they put the belt on tight.
RE: Post #19. You mentioned checking fuses, but did you remove/check the relays R9 and R1 PLUS the condition of the fuse box contacts below?
"Engine Fuse Box: Remove Relay R9, look at/smell the contacts of the relay and box. Also check Relay R1. Give them both a lite thump with your finger in case a contact is stuck."
I remember doing that back in Post #12, I must be writing in Chinese.

And YES you can have the alternator benched tested. It's a very simple process any Napa, AutoZone, etc can do for you for free. Remind them to be sure they put the belt on tight.
RE: Post #19. You mentioned checking fuses, but did you remove/check the relays R9 and R1 PLUS the condition of the fuse box contacts below?
"Engine Fuse Box: Remove Relay R9, look at/smell the contacts of the relay and box. Also check Relay R1. Give them both a lite thump with your finger in case a contact is stuck."
Ya silly boy Frank, you won't do that again in a hurry eh. 
Frank, try all the ideas the guys have already mentioned first but unfortunately the battery polarity reversal normally 'cooks' the engine ECU at minimum, maybe some others.
Good luck with your endeavours and hope you sort it out cheaply.

Frank, try all the ideas the guys have already mentioned first but unfortunately the battery polarity reversal normally 'cooks' the engine ECU at minimum, maybe some others.
Good luck with your endeavours and hope you sort it out cheaply.
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