Here is a link to a FB post that I did to show the results of removing your malfunctioning (or un-useful) NAV unit from your 2002 Land Cruiser. This also shows you the 4 wires that need to be spliced in order to restore the front left speaker function - as well as preserve the wiring if you ever find the need to reinstall the NAV unit.
I plan to verify after I get my stereo installed, but you should be able to replace the gen 2 system with a gen 3 or 4 system as a plug and play upgrade (with a new appropriate map disk)
Facebook
I hope this does not violate anything. I could not figure out how to post pictures here so they stayed linked.
Feel free to delete and send directions to post pictures and tutorials. I will add stereo install pics as that system progresses.
I plan to verify after I get my stereo installed, but you should be able to replace the gen 2 system with a gen 3 or 4 system as a plug and play upgrade (with a new appropriate map disk)
I hope this does not violate anything. I could not figure out how to post pictures here so they stayed linked.
Feel free to delete and send directions to post pictures and tutorials. I will add stereo install pics as that system progresses.