Can someone help me with 2 wire nest setup plz

[Strunker]

• I have an older boiler from 2008 just heating no cooling. I was able to wire white and rc and the nest can control the burner but due to lack of c wire no smart features and I have n260 error code. I have the wiring harness power connector but just unsure how to connect it for c wire and I don't want to explode trying to wire it. Below is a link with what my burner mother board looks like. Ty. 

https://photos.app.goo.gl/PUpkrNxteEbQbxmF8

[Patrick_Caezza]

@Strunker 

You are going to need an external 24vac transformer since you don't have a C wire. You can get them from Amazon.

Use this wiring once you have the transformer.