Wiring Problem ???

I posted earlier about the wifes 04 Ultra trike about the left side signals not working. Originally thought the ECM was bad as that has the turn signal relays in it. So took it to the dealer to install it so they could marry the two together. Well the dealer told us that its not the problem.
Hmm, now thinking the wiring I did in the bars has a break in it. Checked it all forwards and backwards, nope all is good. Fuses all good (otherwise the r-signal wouldn't work.
Did a continuity check from point A to point end, the ECM where the L-turn signal input connects, all is good. Checked for the electrical pulse for the L-signal input, yep received a signal. So now I'm back to the ECM.
Dealer installed one last week that they got from another dealer and it did not make a difference.
Can't see where it could be anything else at this point, any ideas. One possibility is the one from the other dealer was no good either or they put the original back in thinking they put the new on in .

The hazards only work on the right side no L-signals and no signal coming from the ECM for the left side.

Thanks for the input Tom. The L-signal does send a pulse to the ECM White/Violet wire. The output from the ECM is a solid Violet wire and has no output from the ECM. There is a voltage signal at the L-signal and when pushed the same signal from the L-switch is present all the way to the ECM.

Seems to me if the ECM recieves a signal from the L-turn switch and nothing out the output then the ECM must be the problem. Tired of working on it today.

Those are pretty much the same wiring colors as the 04, interesting. Cheaper for HD to keep things the same I guess.

By the way you guys are a bit warm tonight.

normal for Texas!!!!

how do you know the ECM isn't signaling...

They swapped it out and it did the same tells me
its probably not the ECM, either the signal is not coming into the ecm
via the switch wire and it doesn't know it needs to send a
signal to the light or the wire from the ecm to the light is compromised.

JMO

Did you test at the ECM for voltage coming
out of the wire there or at the light.

You need the pins they sell at harbor freight so
you can pierce the wire sheathing but not
damage the wire and check for a signal coming
from the ecm there...

quick test, pull the wire harness connector for the right and left and swap them up front, see if the problem follows the wires

Yep, used my LED test light and checked the pulse in at the ECM White/purple wire (power coming in) and checked the wire at the ECM output purple wire no power out.
When I took it into the dealer they said the ECM was not the problem. All they did was put another one that they got from another dealer in and tried it. Can't think what else it could be. Right signal out of the ECM works fine and the output for the R-signal at the ECM works (blinks).

possible the output wire is not seating properly

check the output wire for the other side, see if you get any
voltage.

As my previous post said Right signal at the ECM is working has a signal out at the output wire.

check the connector from the harness to see if the pin is still on the wire and that the pin is properly seated, could be a bad connection in the harness connector

Checked it and was OK, talked to the head mechanic at Latus HD and he said I was doing all the right tests and sounds as if it is in the module. I'm bringing it back to them next week after the wife returns from her trip to Vegas. Went to her niece's wedding and I get to stay home and stuff pills down her sick cat plus work on her bike. :cussing:

which one upset you the most, pills in the cat or working on the bike LOL

Pills three times a day 6-morning 3-afternoon which she will need at 3 and 4 at 10 PM. Just had to rescue her from almost getting attacked by a Raccoon, dang cat has an enlarged heart with congestive heart condition and she was standing up to a big Raccoon. Won't have to worry about the pills if she ever fights it.

Her cardiologist (yes cats even have cardiologists) has told us she has about up to a year to live. Its going to be a bad day here when that happens. Wife has never had kids of her own and Heidi, her cat is like her child. Hard to believe how much we care about our pets.