Hi, I just finished to connect my LC1 this way

Quoting SAML1
No, dont do this because your LC1 DB gauge will be completely off. It is designed to work with only the factory voltage output by the LC1. I learned this the hardway. If you want to emulate the narrow band, retain the gauge, and send a signal to the MS. You will have to setup the MS to work with the LC1 factory output put the gauge and MS on the brown wire, and send the yellow wire to the NB plug next to the cam sensor.

Where in MS do I go to setup the yellow wire for 10.1=0v and 20.1=5v?
And where do I go to setup the brown cable signal.

Also, I wired the LED and push button permanently. When I go to do the calibration, everything works well and the led flashes and then it gets solid. But when I push the button the LED turns off and when I let go it just lights up solid again. Is there something wrong.
Also, every time I turn the car on, the LED blinks for about 10 to 20 seconds, (gauge says 8.1 AFR) and then it goes solid and the gauge says 14.9 AFR

 

Although you will need to configure MS to accept the linear wideband input, the configuration of the yellow and brown wires on the LC1 is done with a piece of software that came with the LC1. It has nothing to do with the MS at that point.

 

Read the manual for the LC1, and MEMORIZE it or you will regret it later. Trust me, I speak from more experience.