No need to pierce wires or connect multiple jumper wires. Simply remove relay to be tested, insert correct adapter and insert relay into adapter. Adapters have tabs for clamping and flat pads to place test leads on.
Lisle 56810 Relay Test Jumper Kit
Lisle 56810 Relay Test Jumper Kit Auto New ????
Lisle 69200 Test Lead Kit for Lisle Relay Test Jumpers 56810 and 60610
Lisle 69200 Test Lead Kit for Relay Test Jumpers
Lisle 60650 Gray Relay Test Jumper