As the wiki page is a bit content-free at the moment, I just wanted to check that my assumptions about connecting up your shift light setup was correct (based on the instructions for the Dual LED cluster):
12V = 12V switched supply
A1 - A5 = MJLJ user outputs 1-4 and shift light output
R1 - R5 = bridge or add resistor to reduce brightness
I guess it doesn't matter which way round the LED anode and cathode are installed.
Is that all right?
Assembling Sequential Shift Light
Moderators: JeffC, rdoherty, stieg, brentp
Hello Tom,
Build instructions have been updated.
In short: install the included 100 ohm resistor for R1,R2 (green clusters), and the included 270 ohm resistor for R3,R4,R5 (Yellow and Red clusters).
LEDs install in one direction, as LEDs normally do. Match the flat edge of the LED body with the flats on the board silkscreen.
Build instructions have been updated.
In short: install the included 100 ohm resistor for R1,R2 (green clusters), and the included 270 ohm resistor for R3,R4,R5 (Yellow and Red clusters).
LEDs install in one direction, as LEDs normally do. Match the flat edge of the LED body with the flats on the board silkscreen.
Try using the same technique outlined in the Rev Limiter assembly / V4 MJLJ assembly- prepare one pad with a small blob of solder, then while holding the part with tweezers or needle-nose pliers, re-heat the blob and slide the resistor into place. Then solder the other pad. Repeat with the rest of the resistors!
Ok! Finally got the rest of the MegaJolt setup finished and installed... and discovered that the LEDs now aren't working as well as they first seemed to.
The second cluster doesn't want to light up. I've checked the resistor, and it reads as around 101 (as it should) - but when supplied with 12V, it seems to supply more than the 9 or so that the rest end up with (could this be because the first LED is damaged, and so no power is getting through to the rest?)
EDIT: Have now tested the LEDs - only the LED immediately after the resistor is damaged, so I'm going to remove and replace it. Should I also replace the resistor?
EDIT (again): Having temporarily replaced the LED, all seems fine again. I suppose it's possible that the resistor shorted on something and fried the LED.
What type of LEDs are originally supplied?
Thanks for any pointers you can give
The second cluster doesn't want to light up. I've checked the resistor, and it reads as around 101 (as it should) - but when supplied with 12V, it seems to supply more than the 9 or so that the rest end up with (could this be because the first LED is damaged, and so no power is getting through to the rest?)
EDIT: Have now tested the LEDs - only the LED immediately after the resistor is damaged, so I'm going to remove and replace it. Should I also replace the resistor?
EDIT (again): Having temporarily replaced the LED, all seems fine again. I suppose it's possible that the resistor shorted on something and fried the LED.
What type of LEDs are originally supplied?
Thanks for any pointers you can give
Hi Tom,
Sorry to hear that- was it the same cluster that you had a problem with before? Can you identify which LED might've failed?
If you have voltage spikes in your electrical system that might be stressing them out, but that's just a guess at this point. Do you have a 12v voltage regulator lying around, like a 7812, that you can use to provide the +12v to the cluster?
Brent
Sorry to hear that- was it the same cluster that you had a problem with before? Can you identify which LED might've failed?
If you have voltage spikes in your electrical system that might be stressing them out, but that's just a guess at this point. Do you have a 12v voltage regulator lying around, like a 7812, that you can use to provide the +12v to the cluster?
Brent