splice (something) to (something else)
To join something to something else by binding, adhering, or interweaving the end points. I bought some new wire and spliced it to the old one at the point where it had been severed. In the old days, film editors had to physically cut up the filmstrips and splice them to one another.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
splice something (in)to something
to connect something to something; to cut and join something into something to connect the two. The workers spliced the small wires into the main cable. Let's splice this rope into the larger one at the halfway point.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.