http://autolumination.com/3157_3156.htm
a white red and amber per tail light
however
here's the issue list
1. no flasher relay for the main harness - it's integrated into the hazard switch in the dash:
if you get just led turn signals, they will flash rapidly
if you get jsut led stop lamps, your turn signals will flash rapidly if your foot is on the brake
2. you can fix the brake off turn signal issue one of 3 ways
a. 25w 6ohm resistor from L and R turn-signal wires to ground at the tail light or in the tail light harness
b. 25w 6ohm resistor from L and R turn-signal wires to ground in the trailer plug harness
c. quite possible to get a LED flasher and plug it into the trailer harness in the Rt. rear interrior quarter panel - there's 4 of them on the harness
3. once you've put the 6 ohms per side, of resistance back on the turn signals either way you go about doing it, you also need to do the same to the stop lamps
d. what won't work is a fix within the trailer harness - the trailer harness stop lamps is only fed from one stop lamp feed from the main harness
-so either a 12ohm at the junction box or 2 6ohm'ers on the stop lamp wires to the ground
I haven't finished investigating other options for the stop lamp fix
the trigger for the flash fast fault symptom after you've fixed the turn signals is in line with the brake lamp switch not the parking lamps, otherwise it would just require a HD parking lamp relay but they are actually different circuits and different wires all together
I'm 99% sure you can fix the turn signals with HD or LED compat relays installed to the trailer tow relays in the tow harness in the quarter panel
the stop lamps on the other hand from what i've turned up, will require the 25w 6ohm resistors