I replaced the DFI Module and my spark plugs and leads in my calais yesterday and also replaced the battery and this morning I was driving about 110 on the highway and all of a sudden all the lights on my instrument cluster lit up for a few seconds and the engine cut out for a quick second before the instrument cluster and engine went back to normal. I got no idea why it did it but I'm assuming it was related to the work I did on it yesterday.

Anyone got any ideas why it did this? It hasn't happened since and everything seems to be fine still on the car.