we used social capital component at different place as constructs. Generally, social capital always jointly together as indicators as reflective construct of social capital.
I do not see a reason why you cannot. Just be sure to see how the 'indicators' which I am assuming as multiple dimensions of the social capital construct are conceptualized - are they formative? or are they reflective? My guess is that they would be of the formative type. Accordingly set-up this construct/s in your overall model, and run it. Assessment and analysis will vary depending on the way the constructs was modeled.