Before you remove anything from the dash, confirm the vehicle can support the install: locate CAN High and CAN Low, confirm a 12V permanent and a switched ignition source, verify ground, and measure the opening.
Ten minutes of checking here is the difference between a two hour install and a car sitting on a lift for two days waiting on an answer.
Run through this list:
| Check | Confirm |
| ECU brand and type | MaxxECU, MoTeC, Haltech, Link, Syvecs, Emtron, GM, factory |
| ECU connection method | CAN, OBD, serial |
| OBD port working | Yes / No |
| CAN High and CAN Low located | Yes / No |
| Power source, 12V permanent and ignition found | Yes / No |
| Ground verified | Yes / No |
| Space for dash fitment | Enough / needs modification |
| Mounting points | OK / need fabrication |
| Warning lights currently on | Yes / No |
| Interior trim condition | Intact / broken or missing |
Photograph the front, rear, dashboard, ECU area and battery before you start. If a dispute comes up later about pre-existing damage, those photos settle it.
Related: Where to Mount Your Elite Dash Screen · Power Wiring: Battery, Ignition and Ground · CAN Bus Termination and the 120 Ohm Resistor
