gasgas 0 Report post Posted March 20, 2016 Hi, I have a problem with a blown ballast resistor in the ecu manifesting itself by showing the key code light and immobilising car, this apparently has been caused by a wiring problem on car,after many hours fault finding on car wiring unable to find a fault?. guy says obviously if i have ecu repaired and then plug back in if fault on wiring not solved then blown resister again. question is can i run fuel pump and ignition from a relay powered up from ignition key?. Desporat Mick. Quote Share this post Link to post Share on other sites