'may tap into' is correct and usable in written English.
You can use it when you want to talk about the possibility of using something. For example, "This job may tap into my potential in ways I never expected."
The new town houses may tap into a growing appetite.
Botox's market potential may tap into a public more open to holding onto youth.
If your blood levels are low, your body may tap into these reserves to correct the problem.
Psychologists also say that they suspect exposure to publicly available child pornography may tap into some adults' latent pedophile tendencies.
Experts believe it's possible that rapamycin may tap into one of the same biochemical pathways as calorie restriction, an intervention long known to make mice live longer.
In some sense these clothes may tap into a nostalgia, however selective, for a time in which families were divided continents, the ambitions of parents and children not so intimately linked.
While Paid Off may tap directly into the economic fears of borrowers today, 11.5% of which have defaulted on their student loans according to the most recent cohort data available, the show is not an entirely new concept.
The new study may or may not tap into the same mechanisms, but there's at least something similar going on, in the way of purging unwanted mind-stuff onto paper.
He says the committee may or may not tap into the credit line, and it has "never not paid its debts, I understand".
Daoists maintain that God is not a person at all but an impersonal Force that pervades the universe and may be tapped-into by humans but requires no adoration.
You also need to be aware that a position in a medical communications agency may involve working on a number of projects that may not tap into "classical" medical writing, such as education programmes, publicity, and conference management, so you may want to view this job as a stepping-stone.
