James_m 0 Posted August 19, 2008 Hi all, could'nt find an old thread to add to, so a new one it is! My alternator appears to have stopped working today with no sypmtons from the battery warning light.... Im thinking blown bulb perhaps which does not allow the alternator to excite (like i know what that means) So ive switched it with another bulb from the dash, but its not lighting up which i thought it was supposed to with the engine switched off and ignition on? So is it actual fact not supposed to light up, or it is and i have a seperate problem, i.e dead alternator itself. Cheers James. Share this post Link to post Share on other sites
jackherer 543 Posted August 19, 2008 Take the spade connector off the alternator and ground it to get the bulb to light up. If the bulb is working properly it should light when you turn the ignition on and go out when the engine starts. Even if the bulb isn't working most alternators will start to charge once the engine is revved over 3k or thereabouts so the chances are your alternator is dead. Share this post Link to post Share on other sites
jimistdt 1 Posted August 19, 2008 Fuse 1 (10Amp) operates the Battery Charge light on the dash, it also does the Reverse Lamp, Tacho and Fuel Guage among others so if they're working you can rule that out. My battery Charge light works when the key is in the position you described, along with the Handbrake On warning light and Low Brake fluid. Hope that helps a bit Jimi Share this post Link to post Share on other sites
James_m 0 Posted August 19, 2008 Cheers for the replies Well i have a fuel gauge, so that rules out the fuse i guess. I will try and earth the wire and see what happens Alternators dont appear to last for very long for me.... 2nd dead in 5k My battery positive loom isnt the best so i might build a new one and see if that helps. Cheers James. Share this post Link to post Share on other sites
jackherer 543 Posted August 19, 2008 My battery positive loom isnt the best so i might build a new one and see if that helps.Cheers James. My positive loom once snapped off at the ring connector on the alternator, a bit of a fire risk if it had grounded as thats the only unfused wire from the battery so its worth making sure its all solid. Share this post Link to post Share on other sites
James_m 0 Posted August 22, 2008 Right, had a chance to look at this today... Even earthing the Alternator spade connector does not make the warning light come on which is a bit strange. The wire comes back to one of the brown multi plugs, then transfers to a green wire 7A It then appears to go over to the passenger side of the car probably to the fuse box area. Anybody know where it goes from there on and which wire it ends up as back to the dash? Phase 2 brown multiplug loom btw Dont know if this could be related, but my dash as a whole is not especially reliable... Got a shaky oil pressure gauge, and very rarely water temp, and now my stop light has randomly stopped working(since ive have the clocks out) leaving only the handbrake warning light which itself flashes sometime when the handbrake isnt up.... Any thoughts welcome! James. Share this post Link to post Share on other sites
flipperthebushkangaroo 2 Posted August 22, 2008 there was a topic about this from when mine had the same problem, basically the alternator warning lamp is also the alternator excitor supply so if it has failed no alternator output can't find the wiring diagram at the moment though sorry Roddie Share this post Link to post Share on other sites
jackherer 543 Posted August 23, 2008 Sounds like you have several wiring issues to the clocks, try unplugging your Mi16 loom under the dash and ground the relevant pins under the dash to see if the problem is the dash or the sensor loom. leaving only the handbrake warning light which itself flashes sometime when the handbrake isnt up.... This is completely unrelated to the other lights, the handbrake light doubles as a low brake fluid light so check your brake fluid level! And if its happening under acceleration it may be the cam cover hitting the master cylinder. Share this post Link to post Share on other sites
