Bench

Bench MCU

Connections

Power connection

Connectors

MCU power connectors were these:

Connector X425:

• 31372-1000 Molex | Mouser
• molex_31372-1000 Color: Black
• pin 9 and 10 are GND (to PC PSU Black)

Connector X426:

• 31372-1100 Molex | Mouser
• molex_31372-1100 Color: LightGray
• pin 7 and 8 are 12V (to PC PSU Yellow)

With these pins (for power):

• 1326030-2 (Loose Piece) TE Connectivity | Mouser

When you want to connect the Instrument Cluster (IC) as well you need the following:

Connector X429 (MCU side)
molex_34729-0201 Color: LightGray
pin 5 is CAN+
pin 15 is CAN-
pin 4 is WAKE

Connector X434 (IC side)
amp_1355348-1 Color: Black
pin 8 is GND
pin 17 is 12V
pin 6 is CAN+
pin 7 is CAN-
pin 13 is WAKE

I could not find perfect matching pins but these will do fine: Molex 34803-3211 (Loose Piece)

Sources:

• https://teslamotorsclub.com/tmc/threads/let-the-hacking-begin-model-s-parts-on-the-bench.58951/page-82#post-3464655