So the other day I was changing my Fog Light Relays and I noticed that the ABS Relay was not installed at all. I have read other posts where they state that the same relay used for the Fog Light can be used for the ABS slot. I wanted to know first off if by not having it does that mean that my ABS system is not working, what relay should I use for the ABS and how do I verify that the ABS brake system is actually working once I install the relay. Any help would be greatly appreciated.