Hello guys

hope you can help,have uk 2004 L200 2.5td with a cold start problem,the glow plugs have been replaced about 8months ago and have failed again,so being suspicious i checked the feed and with the ignition on the plugs come on and go out o.k,but when you run the engine the plugs stay on for about 4-5mins,does anyone know where the controller/timer relay is??? the solenoid on the n/s inner wing is o.k and not sticking,i took the kick panel of the n/s and found two modules and a small relay but the colours didn't match up with the solenoid feed wire which is light green with a black tracer,any help would be great.is there a temp sensor for it too,and someone mentioned its linked to the alternator...

thanks andy