LED lights and Resistors

Okay, I am now the proud owner of 15 pages of wiring schematics from mcctech. It is now very clear where my problem lies. And, it is the fact that they use the signal lights for a ground on the side markers. Explains why the side markers and the signals flash alternate when engaged.

Thank you to all that responded. Your advice is appreciated.

The brighter turn signal lights act as a "ground" for side marker lights.

That statement is pretty useless to you. GOOGLE

GM turn signal side marker wiring diagram

I installed the left and right front combo (3-wire) clearance/signal lights and everything worked like it should. Then, I installed the middle clearance light and tested again and the signals work fine. However, when the headlights are on, and the signals flashing, the parking light is real dim and the led front combo light only works as a signal and not a clearance light. Is this all confusing enough? I don't have a wiring diagram, so I can't see the relationship between the marker lights and the signal lights.

What is the symptom?

Hey everybody Thanks for all the great advice. Right now, the issue is not with the flasher, but with the relationship between the front parking lights/turn signals, and the side clearance lights. BTW, I wired the new front clearance/signal light in parallel with the parking lights, including the ground. I'm thinking, but not sure, that I need to put a resistor across the new side light.

Electronic flashers (a good one) needs a lot less pull down load (added resistor) than the old fashioned 1/4 ounce flashers. I use 100% LED and find even with a minimum of load adding a TEN WATT ONE OHM CERAMIC RESISTOR to the flasher "X" terminal is plenty enough load to make the flasher work.

Oooo Oooo Oooo I can hear the "ONE OHM REQUIRES 12 WATT RESISTOR", from here. The signal is INTERMITTANT so the 10 watt resistor will do fine as long as it is kept in open air.

Resistors/drivers are already attached nothing else is necessary.

On a 93, if you use a heavy duty flasher (ie not the one that came with it) then it may work without any other modifications because the front turn signal lights or even the indicators in the dash will provide enough resistance to make it work.
I would try that first.

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