I want to link my different domains

[Leslein]

What I mean is. I have 4 different sites and I want to take three of them and just redirect them to one site.

Is there any trick to doing this? Do you have any suggestions for me?

[Vasili]

Re: I want to link my different domains

For each of the three, you will access the Domain manager panel at whichever Registrar they are held at and then FORWARD them to the single Domain.

Do not "re-direct" or anything else: simply FORWARD them so there is a seamless destination (the single Domain).