I have an ‘N’ reg Fourtrak diesel van. Like me it’s showing its age. It has flashing warning lights, similar to the problem reported by Richard p on 26/11/2010. On my van the fan belt is tight and the battery is being charged.
As I drive along, 3 warning lights flash on and off for a few seconds. Then they go off. This is repeated during the journey. The warning lights are brake, charging and oil plug. On other occasions I can drive the same route for days, even weeks, without a flashing light. The van is driven every day along a rough, unmade farm track for about a mile. The lights have never flashed there, suggesting the problem is not a loose wire. The wiring diagram shows the wires from those 3 lights are linked by diodes (I found a web site that explained the symbols). So there is a physical connection between them.
My garage had the van for 2 weeks before admitting defeat. The one useful thing they did was clean some badly tarnished connections to a relay ‘just under the bonnet’. That’s the mechanic’s description; I’ve no idea how to recognise a relay. Afterwards the lights still flash, but far dimmer. They had done something significant. I took the van, the wiring diagram and a brief explanation to an auto electrician. He had it for a day and drove it around. Because the lights wouldn’t flash he couldn’t do anything to help.
I’ll have to take the van to another garage, but suspect it will only be fixed if I can tell them what’s causing the problem. Has anybody any ideas please?