Hello,
I would recommend consulting an accountant for the specific account to offset for the purchase.
Typically however, if you are track the trailer as an asset, record a check from the checking account and offset an asset account called "Trailer" as example. That way it shows the money left the bank account but the business now has an asset for the value of the purchase price.
This also allows you to track and lower the value of the trailer over time and offset a depreciation expense account.
