Can I use a relate field to pull in details from another module?

Hi 

Thank you in advance!

background

We would like to automate some fields in the RLI module using the account data in a relate field. I know this is possible using full relationships but I don't want to create it this way to avoid subpanels and any reference on the account module.

I have added a relate field in the RLI module for the accounts module. Ideally when I enter an account in the relate field then fields a / b / c all pull through from the account linked.

thanks

Jay