I had to replace the heater matrix on a 306 i bought a few weeks ago. Yesterday when I got the dash back in and everything connected up when I turn the ignition on the side lights are permanently on even when the lights are switched off. Also the engine runs extremely lumpy at idle to the point of cutting out, does anyone have any idea what either of those could be caused by, everything else seems to work fine. Any help would be really appreciated as i'm getting close to taking a sledgehammer to the thing!!