S197 Mustang SVA, IVA, Importation & Light Conversion Information

Observe that one end has a silver stripe on it, that is to ensure you fit it the correct way around. It is imperative they are fitted the correct way round.

The diode goes between 1 and 5 on your Omron relay bases, bridging between the only feed from the SJB (being the light you have tapped from) and ground – with the black end of the diode going to the Nr 1 ground terminal. Put another way, black end to earth, silver stripeend to switching live from the light you tapped from.

The relays you need are low current devices. Do not use standard ‘automotive’ style relays. The average Automotive relay has a coil resistance of about 60-90 Ohms, where as a relay more suitable, will have a value of about 1000 Ohms. You really do need to put a back EMF protection diode across ANY relay coil connected to an ‘electronic’ output. This will minimize the back EMF voltage across the SJB* outputs. More on that on the diode article.