Terminator X Max. Questions with stock Wiring

[Joey C]

Hello! I’m new to the forum. I haven’t found exactly an answer to my question so I figured I’d post here. I have a 99 2 door Tahoe that I’m LS swapping. I am using the x max so it’s plug and play with the motor and Trans. But I’m trying to figure out if I need to keep the stock ecu for my gauges, lights, and stuff like that. I am currently in the middle of tearing down the stock harness and cleaning it up based off the lt1swap website. I just needed clarification on if I needed to keep the stock ecu for my ac controls, lights, gauges, etc or if I could just get rid of it all together. ALSO, which wire did y’all tap the 12v key switched source from the Holley into?

 

[Lsswaptheworld]

Did you ever find the tricks to this swap? Im about to dive in, trying to find all the info i can...

 

[dyates99]

I’ll be jumping into doing this swap also. 5.3 LM7 going into 98 k1500. I’d like to use the terminator x from Holley but I want to keep my stock gauges working. Has anyone been able to do that?

 

[joshsboosted97]

Any update on this? Doing Lq4 4l80e swap on my 97 silverado and using x max and im wanting stock gauges to work.
uny tips or info would be rad.