1. How to Make ECG Leads Strip 2-3” of insulation
Use an Exacto knife to carefully cut the gray insulation away
Do not cut the metal braided shield underneath

2. How to Make ECG Leads Push the shield together with both fingers
This will cause the shield to loosen around the wire

3. How to Make ECG Leads
Open a hole in the shield to pull the wire through
Use the knife to pry a hole in the shield

4. How to Make ECG Leads
Pull wire out of shield through the hole you made
The shield is now hollow

5. How to Make ECG Leads Twist shield wires together
Twist black (ground) wire together
Slip black plastic banana plug cover over wires
Solder metal banana plug to wire bundle

6. How to Make ECG Leads
Slip orange plastic banana plug cover over arm lead wire (white).
Solder metal banana plug to wire.
Repeat for other arm lead.

7. How to Make ECG Leads Strip other end of wire
Cut shield back from inner wire
Be sure to not solder alligator clip to shield
This will make your ECG not work
Solder alligator clips to each wire
Tip: For a neater looking job, use heat shrink tubing around the base of the alligator clip (put on wire before soldering).