Post by linuxrunner on Jun 6, 2018 11:47:36 GMT -5
I ended up with somebody elses failed project of a 2006 aprilia scarabeo 50. i am close to finished with getting this thing going but i have 1 last issue with bulbs that keep blowing.
basically every bulb on one lighting circuit will burn extra bright and then blow within a few seconds. turn signals are part of the diffferent 12v line and they are fine.
I have 2 12v lines coming off of my voltage regulator one that runs to the battery to charge it (around 13.4v) and one that runs the lights (12.5 - 13.4 depending on RPM). I checked the voltage coming from the regulator and made sure it was >13.5 at all times for the lights.
I did get a new voltage regulator but the same issue persists. in order to test it at length without running the engine (12v lighting from regulator only powers up when engine is running) i removed the regulator completely and plugged a 12v battery directly into that lighting lead. I still get a super bright bulb and then poof burned out and i know that the battery is at 11.8v. I am testing with 12v 1.2w dash indicator bulbs as i have many of them but it burns out pretty much every bulb right away. (the 35w headlight bulb can last for a few minutes usually before it goes.)
I am assuming that i must have a short in this circuit somewhere? something that's pulling very large amperage @ 12v through the bulbs? i have a multi meter however i keep blowing the fuses on the amp meter part (10A fuse) so it's not clear what the full amperage is.
I do have a bench power supply that i can set at 12v and limit amps to any set amount so i might play with that a bit.
basically every bulb on one lighting circuit will burn extra bright and then blow within a few seconds. turn signals are part of the diffferent 12v line and they are fine.
I have 2 12v lines coming off of my voltage regulator one that runs to the battery to charge it (around 13.4v) and one that runs the lights (12.5 - 13.4 depending on RPM). I checked the voltage coming from the regulator and made sure it was >13.5 at all times for the lights.
I did get a new voltage regulator but the same issue persists. in order to test it at length without running the engine (12v lighting from regulator only powers up when engine is running) i removed the regulator completely and plugged a 12v battery directly into that lighting lead. I still get a super bright bulb and then poof burned out and i know that the battery is at 11.8v. I am testing with 12v 1.2w dash indicator bulbs as i have many of them but it burns out pretty much every bulb right away. (the 35w headlight bulb can last for a few minutes usually before it goes.)
I am assuming that i must have a short in this circuit somewhere? something that's pulling very large amperage @ 12v through the bulbs? i have a multi meter however i keep blowing the fuses on the amp meter part (10A fuse) so it's not clear what the full amperage is.
I do have a bench power supply that i can set at 12v and limit amps to any set amount so i might play with that a bit.
