need help finding the data wire for remote install

[Abe Scott]

  I'm trying to install a remote start on my 99 LS400. I need help to determine what color the data wires are, and which wires they are. If anyone can help I would certainly be grateful. I am trying to install a remote start on my 99 LS 400. the color code for the 99 is or must be different from the 98. The color chart that came with kit is incorrect for the year. I believe I have the right ones but, the color don't jive.

[Abe Scott]

I have gone to Alldata diy and found the color codes to connect the by-pass module to complete the remote start installion. with that said I will try to get it completed this weekend. I will follow up after completetion. alldata has electrical diagrams in color for your year model.

 

[Abe Scott]

This might help someone. the immobilizer for the 99 lexus ls400 was behind and to the left of the stereo. then tested wire with  multi-meter in the kick panel and door. the color code for the immobilizer I found on the wiring diagram. For me to with my old aching shoulders. Final done