Note 1: Fitted to North American cars only.
Note 2: North American cars can suffer from a problem whereby the engine may continue to run normally (not Dieselling) when the ignition is switched off see here.
Note 3: Late models have round black relays with ISO terminal numbering as follows:
| Wire colour | Original numbering | ISO numbering |
| White from ignition switch | W1 | 85 |
| Black ground | W2 | 86 |
| Brown 12v supply | C2 | 30 |
| White/brown to ignition powered circuits | C1 | 87 |