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View Full Version : Can two load resistors be wired in parallel?



DaniBoy
03-10-2023, 06:11 PM
I really want to replace the two OEM 1157 bulbs in my brake/tail (running) lights with LED’s. I want the brake lights to strobe. Superbright LED’s has a modulator (but I get a VSS fault/limp mode) with it. Superbright tells me that I need a load resistor on each the left and right. My question is if those two resistors AND the strobe module can be wired in parallel on the brake light wire just above the switch by the pedal? That way, with both of them in parallel, half the resistance will go to each brake light and just one strobe modulator will run the system

IdahoMtnSpyder
03-10-2023, 08:13 PM
First, since I'm not familiar with the RS are the turn signals amber and separate from the brake lights? Which modulator are you looking at? That can make a difference.

DaniBoy
03-11-2023, 11:06 AM
First, since I'm not familiar with the RS are the turn signals amber and separate from the brake lights? Which modulator are you looking at? That can make a difference.

The turn signals are on the upper rear Tupperware. The lights in question are the standard 1157 bulbs (“globes” to Peter) that are two filament bulbs. One filament is the running, or tail light, and the other is the brake light.

IdahoMtnSpyder
03-12-2023, 08:03 PM
What brake light modulator are you looking at? I don't find any on Superbrightleds.com. Signal Dynamics makes several different ones. I need to know which one you specifically are thinking of so I can see the wiring diagram and figure out how best to wire it in.

PaladinLV
03-13-2023, 09:20 AM
NO!
Not sure I read your question correctly or IF it was worded correctly BUT:

Two resistors in parallel on the main line is NOT the same as one resistor in each line.

AJ

tntnj
03-13-2023, 12:46 PM
PaladinLV is correct if you were to parallel lets say 2 100 ohm resisters they would equal 50 ohms

IdahoMtnSpyder
03-13-2023, 01:16 PM
I'm not sure he needs resistors to use LEDs with the brake light modulator. That's why I want to know what modulator he's thinking of using since it can affect how the ECM monitors the brake light circuit.