Heatings gone in the car, was abit funny before but just a mess about with the connection fixed it but this time I think its blown, checked the fuses and can't seem to find any blown ones so unplugged the connection and found this
I think this might be the cause and was thinking about replacing it and am I right in thinking its this piece
If so has anyone replaced it is it just as simple as pulling out and putting in? help needed asap please thanks.

I think this might be the cause and was thinking about replacing it and am I right in thinking its this piece

If so has anyone replaced it is it just as simple as pulling out and putting in? help needed asap please thanks.