I added some plow lights. Had to use relays for the head lights, but the turn signals are just spliced in. the new bulb shares a ground with the head light. (this is how the bulbs are inside the plow lights)

This setup works fine for the driver side. but for some reason the passenger side turn signal lights alternate blinking rather than blink at the same time ........


how can the signal from the same wire be delayed???

Is it possible that there is a bad connection causing a bad ground to the added bulb that is causing it to be delayed? but if that is the case wouldn't the added resistance simply only allow a smaller voltage through, not delay the voltage?

http://i813.photobucket.com/albums/z...naldiagram.png <------- wiring diagram

thanks

 

Didnt notice it before, but im actually getting the lamp out code with the turn signal, all be it only with the head lights on. head lights off it works fine.'

so,,,, resistor behind the new turn signal bulb? keeping most of the electricity going down the original turn signal ground. tho the problem with this is the turn new turn signal bulb wont be as bright?

only other alternative is to not share a wire with the head light.

must just be the difference between the left side and right side wiring.

 

What year are we talking about here? I assume 2002-2005?

 

correct. 04.

i made it so both bulbs are groudned to the turn signal bulb.

then even removed the trucks bulb.

even though the plow bulb still blinked, every blink the truck seems to think the bulb is blown.

coudl it be that there just is not enough amperage for the truck to run this bulb?

my only other option it seems is to run a relay off of hte turn signal wire and pull juce directly from the battery for the new bulb. i would like to avoid this if possible. tho it seems i may have to.

 

You say your turn signal shares a ground with the headlight? It should have it's own ground or the same ground as the turn signal on your truck. The alternate blinking tells me there is a ground issue going on, but the problems could be caused from many things, especially when your tieing into fused/relayed oem circuits with aftermarket multiple grounded items...

My first choice would be to use relays so your not pulling more current through the factory spec'd wiring! Pulling more current can melt wires, burn out contacts, ruin sensitive electronics, etc,.
You can use the power supplied to your headlights to power up the relays, but you'll need a relay for each side for independent directionals. I think you'll still have a minor delay with relays.

 

well. idid start sharing the same ground. but that didnt fix the problem. with the headlights, both sides, high and low bean i did have to have a relay, with the light activating the relay.

the left turn signal does work, truck and plow. but not the right. the right side also seems to be dimmer. im thinking there just isent enough amps to do what i want. relay may be my only option unfortunatly.

 

well, a weak ground can limit the current potential, so if your headlight is on, it's using up the current potential-to-ground that the turn signal would need, which is why when you turn off the headlight the turn signal works just fine. Also why one side works and the other doesn't.
Try working on a better ground first.

 

originally grounded new bulb directly to bwtery. did same. not enouth juce on truck bulb ground truck thinks its blown