Derekco Posted January 21, 2019 Posted January 21, 2019 Hi does anyone know what relay 404 does it's 40 amp and I have 4 plugged into fuse box b I swapped them around and my a4 starts better I googled the part no .on onlineparts.co.uk it says it for glow plugs am not sure though anyone got an idea the Bosch part no. 7MO 951 253C
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