I have questions on a ls swap I'm doing on my e39 wiring harness etc 0

[98540eye]

I have a 2004 ls1 out of a c5. I'm getting a T56 transmission to put in it as well I'm wondering if anyone could walk me what wiring harness I need to buy or which harness would be the easiest to install which would allow my cluster to work as well? Would really appreciate the help!

[JimLev]

Get in contact with RVA34E or Schitzo, they are probably the best one's to get info from.
I'm helping a friend with a GTO LS1 going into an E38.
We're just getting to the wiring part.
Don't think you can buy a harness.

[98540eye]

Ok thank you so I should be able to play with my e39 wire harness get my cluster to work with the ls1 along with buying one

[Only1Balto]

Please report back. I'll be doing this in the future as well. Would love to have a road map to make things easier.

[98540eye]

Once I get it figured out I will do!