That victory came despite the visitors playing almost an hour with just 14 men following CJ Stander's 23rd-minute red card for a challenge on Patrick Lambie.
The sending off meant Trimble - who helped Ulster reach the Guinness PRO12 semi-finals this season before losing to Leinster - was forced to pack down at blindside flanker, an experience he has since admitted he is not too keen to repeat.
The 31-year-old is adamant the celebrations are now over however with Ireland focused on securing a series win in the remaining Tests at Johannesburg and Port Elizabeth.
That won't be an easy task with Trimble convinced a wounded Springbok is a dangerous Springbok.
"Obviously when they're hurting a little bit more there's potentially even more of a fear factor for us, because they're fighting for their lives as well. I'm sure they're getting a hard time," said Trimble.
"I'm sure they're going to look at their performance and identify a few areas that they can improve on. I think we're going to face a massive backlash and we need to get better.
"It's really, really difficult to win a series in South Africa and for us to go out there again we need to produce another massive performance.
"Physically we need to be switched on, mentally we need to be switched on.
"Last week's gone now. Certainly we enjoyed getting a few pats on the back but we've got another job to do now and it's pretty exciting to be in a position to create another bit of history."
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