
I am trying to convert my brake lights over to LED, using the 1157 LED red brake lights and am having issues.
Some basic background on my 1994 1500 SE, a previous owner installed a blinker relay into the brake lights on the trunk which would cause the brake lights on the trunk to blink when the the brake was activated, the saddlebag lights didn't blink.
This relay prevented the LED lights working as both running lights and brake lights, they did not become brighter when the brake was activated. I have disconnected the relay and returned the wiring to it's normal configuration, tested using the 4 standard 2057 incandescent light bulbs and they all work as normal, all four lights utilize the double filament and there is no blinking. When I change the bulbs over to the LED there is no visible increase in brightness when the brake is activated. As long as I have at least 1 2057 incandescent light bulb the 3 LED lights will increase in brightness when the brake is activated.
My son and I have tried various size resistors but haven't been able to get close to satisfactory results. We see minor increases in brightness but in my opinion not enough to get some ones attention. We are going to start checking the grounds, but wondering if there are other things to look into.
These are the lights we are using:
https://www.amazon.com/gp/product/B01MY ... =pd_gw_unk
Thanks - Doug