aces25

From what I've read, a 3 Ohm 50W resistor can be added to each rear turn/brake for LEDs (tapping the run/break and ground wires). Which wire set do you tap in? The top or bottom light? Or do you tap in further back in the loom? Or does it matter?

Greg Owen

The resistor is used so that the truck doesn't think a bulb is blown when using a lower voltage LED. Therefore, you have to apply a resistor to EACH socket/bulb.

aces25

I thought that was only for using 6 ohm resistors. From what I've read, 1 resistor (3 Ohm, 50W) per side is sufficient.

lewis26

iTrader: (1)

I'm pretty sure you just need to do one socket per tail. Tuxedoblack11 did it on his.

Greg Owen

I've replaced all my rear bulbs w/LEDS, including back-up lights. One resistor on each side will not work.

You need one resistor for EACH bulb. I tried just adding one resistor to one of the light circuits on one side, but still had the "rapid flash" turn signal until I added the second resistor to the second light circuit on the same side. Each bulb needs it's own resistor, otherwise the truck will "think" a bulb is blown and "rapid flash" the turn signals.

All of the popular online retail sites say the exact same thing.

aces25

And all those sites use typical 6 Ohm resistors. Again, from what I've read, it looks like only 1 3 Ohm resistor would be needed for each side. Calculating approximate resistance value for the circuit confirms this. I'm trying to find out which one to socket to tap in and where to secure the resistor. I don't think it matters, but I want to confirm.

CollinM

Take the advice from the other members, or just go do it yourself. No need to argue with them. You came here looking for an answer not a fight. You got what you are looking for, it's just not what you want to hear

aces25

Whose asking for a fight?

What he said is true for 6 Ohm resistors. This is the most typical because most vehicles only have 1 turn bulb. From other (vague) threads I've found on this forum, and from finding the equivalent resistance of the circuit, a 3 Ohm would be equivalent. I know I can install 2 resistors (6 Ohm) per side - just wanted to confirm with someone who has installed the 3 Ohm that only 1 is needed.

Do you have any experience or information on this?

aces25

I'll send him a PM to ask. Thanks.

XtraLargeTall

It's 3 ohm per side from the turn signal wire to ground wire.

I really wish TRS made 3 ohm versions of their 6 ohm resistor as it's built much better and I shouldn't have any issues with the wiring like I have with the current ones (built with cheap, crappy wiring). I'll probably still spring for them, just have to do a little extra wiring but really no big deal.