Led trailer light woes

[Mech4niq]

Looking for some quick practical advice.
I have replaced my front fender turn signal bulbs with led some time back (both front and side markers). I replaced the turn signal relay with Novita 470. I tried to replace the tail bulbs with Led but that didn't go well so I left the oem incandescent in there. Everything was working OK other than the turn signal indicators staying on the dashboard due to double front led bulbs.

Today I needed to wire in trailer lights. These are led units and I wired the trailer harness into the tail light harness with snap connectors. After I plugged the trailer lights in, they illuminated as designed, tail light, brake and blinkers but after just 2 flashes, the blinkers stopped working. I disconnected the trailer lights still no flashers at all and my brake lights are acting up; 3rd light doesn't light up then it does but the main brake lights dont, just random dysfunction.
1. Any ideas why the trailer led lights would cause an issue?
2. If I replace the relay and the issue comes back, what's the best course of action to bring back the turn signals, brake lights quickly. Planning a long drive tomorrow and don't want to drive without properly functioning lights.
Thanks in advance for any input.

 

[Zorba]

Get rid of the front fender LEDs, then troubleshoot the system.

 

[TJ Jim]

Blew a fuse with the trailer lights connected. Unplug the trailer, replace the fuse, and find the short in the trailer wiring.

 

[Mech4niq]

Blew a fuse with the trailer lights connected. Unplug the trailer, replace the fuse, and find the short in the trailer wiring.

Fuses are fine behind the glovebox

Get rid of the front fender LEDs, then troubleshoot the system.

Fuses were fine. I got rid of the LED bulbs still no blinky. I have a feeling I have a feeling i have a short or voltage drop somewhere.

 

[GATORB8]

I wonder if you didn't break a wire with T-Taps.

A little more of a pain, but most vehicles with LEDs need one of the relay/converter box versions of a add a trailer.

https://www.etrailer.com/Custom-Fit...lBmSD7FD9IbhZ7JIt5oJ-Va4l4XZtheRoCV2YQAvD_BwE

 

[Mech4niq]

I have a feeling connector C107 strikes again. This thing keeps corroding out the pins. I already bypassed the flasher power circuit L9 in the past but for some reason the power was gone at the multifunction switch connector. I finagled with the bypass t-clips and power came back to this circuit and blinkers came back but I lost power to the dash and ignition switch. Probably another weak connection in the C107.

Update: After replacing the front bulbs with incandescents and replacing the relay with oem the lights came back and even the trailer lights work as intended. Ignition power to the switch and dashboard is finicky and at times there is a delay or I have to rattle/twist connector C107 to get the ignition to kick in; no obvious signs of corrosion damage on the related pins A6 and B7.

Update 2: cleaned female pin A6 in C107 and it seems to have cured the ignition power issue. There was some greenish/blueish coating in there. Thank you all for suggestions.