Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Connector To Fuse/Relay Box Index
Under-Hood Fuse/Relay Box
Under-Dash Fuse/Relay Box
| Socket | Ref | Terminal | Connects to |
|---|---|---|---|
| A | 2 | 5 | Dashboard wire harness B |
|
|||
| B | 3 | 6 | Dashboard wire harness B |
|
|||
| C | 1 | 14 | Dashboard wire harness B |
|
|||
| D | 4 | 12 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| E | 5 | 13 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| F | 19 | 12 | Dashboard wire harness A
|
| G | 9 | 10 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| H | 8 | 3 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| I | 20 | 5 | |
| J | 21 | 8 | Dashboard wire harness B
|
| K | 23 | 17 | Dashboard wire harness A |
|
|||
| L | 24 | 10 | Dashboard wire harness A
|
| M | 22 | 12 | Dashboard wire harness A |
|
|||
| N | 27 | 6 | Dashboard wire harness A |
|
|||
| O | 26 | 12 | Dashboard wire harness A
|
| P | 7 | 18 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| Power window relay | 12 | 4 | |
| Q | 6 | 8 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| R | 10 | 6 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| S | 25 | 2 | Dashboard wire harness B
|
| Starter cut relay | 14 | 4 | |
| T | 18 | 3 | Multiplex control unit service check connector |
| Taillight relay | 13 | 4 | |
| Turn signal/hazard relay | 11 | 3 | |
| U | 15 | 1 | Optional connector |
| V | 16 | 4 | Optional connector |
| W (Memory erase signal (MES) connector) | 17 | 2 | ECM/PCM wire harness (see ECM/PCM WIRE HARNESS ) |
| X (plugs directly into the multiplex control unit) | 28 | 8 | Dashboard wire harness B
|
| Y (plugs directly into the multiplex control unit) | 29 | 13 | Dashboard wire harness A
|
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.
