I installed the switchback 1157 park/turn signals from tlg auto in the front of my 85 se. resistors are on right, i installed the electric flasher module. everything works as it should just the turn signal indicators on the dash stay dimly lit when park/headlights are on. they still work normally when using the left or right signal too. pretty confused..
Electrons follow the path of least resistance. So your new circuit is resisting too much. If you have non-stock bulbs somewhere, it would change the brightness of other bulbs on the same circuit.
I installed the switchback 1157 park/turn signals from tlg auto in the front of my 85 se. resistors are on right, i installed the electric flasher module. everything works as it should just the turn signal indicators on the dash stay dimly lit when park/headlights are on. they still work normally when using the left or right signal too. pretty confused..
Sounds like one of your turn signals has the wrong bulb... dual filament bulbs should be used. If you use single filament, the power from the park lights jumps to the signal circuit.
Check your grounds. I had a work truck that would dimly light the turn indicators as well as the high beam indicator. Vehicle had a loose ground on the return path from the light sockets. I tightened the ground as well as added another and have not had a problem since. With the TLG lights, hard to say. I have a set on my car and have not noticed anything out of the ordinary.
Side note: I thought that the the resistor was not needed if you are using the electronic flasher unit? That or I did it wrong.
I'm telling you. Just a wrong bulb. From the diagram above. If a single fillament bulb is used it will bridge circuite 9-14 and 9-15 this backfeeds the turn signal indicators.
Kenn07 we need some feed back. Also have you tried removing a front side marker and remove the bulb. What do the turn signal indicators look like now. Where did you install the load resistors? How did you ground the load resistors? Also just a note, if you use a electronic flasher load resistors are not needed. Here is a web page on how I installed mine with no load resistors. Note that I did not use the switch back LEDs, just the amber ones.
Originally posted by Kenn07: I installed the switchback 1157 park/turn signals from tlg auto in the front of my 85 se. resistors are on right, i installed the electric flasher module. everything works as it should just the turn signal indicators on the dash stay dimly lit when park/headlights are on. they still work normally when using the left or right signal too. pretty confused..
Likely a bad Ground or socket. Or deflect LED set. See my Cave, Sneak Path
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Originally posted by J Gunsett: Where did you install the load resistors? How did you ground the load resistors? Also just a note, if you use a electronic flasher load resistors are not needed.
Yes... Ballast resistors should not be needed on Fiero. Remove them.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
Originally posted by Kenn07: I installed the switchback 1157 park/turn signals from tlg auto in the front of my 85 se. resistors are on right, i installed the electric flasher module. everything works as it should just the turn signal indicators on the dash stay dimly lit when park/headlights are on. they still work normally when using the left or right signal too. pretty confused..
Originally posted by chetw77cruiser: I thought that the the resistor was not needed if you are using the electronic flasher unit? That or I did it wrong.
No resistor is needed on Fiero. Just change flasher can. Other cars w/ Aftermarket LED setups Resistor is used to stop BCM sees bad bulb etc.
And Resistor is use on rear, 1 per side.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
Interesting. I also got the switchback kit from TLG auto. I also have the same issue as kenn07.
I put in the relay module they sent, then replaced the left bulb. It works great, but with the parking lights on, the left turn signal comes on dimly. If I change the bulb back to factory, all is good. I tried with either LED bulb on either side, same issue. I now have both LED bulbs in. Bottom line, any side that has one of these LED bulbs in it has this issue. I did replace the correct relay.
I have an 88GT.
My conclusion is that I either need more resistance or a different module. TLG sent me a link to "the only bulb in the world that will work without a resistor" for several hundred $$$ per. They don't mention this on their site, and say they aren't misleading, but this has apparently happened multiple times, according to TLG. TLG is sending me a resistor and instructions for wiring. So much for a few minutes' plug and play.
X2
I have an 87 GT, same issue. I've tried to deal with it though them, but haven't found a solution. Communication through TLG has basically dropped off. I ended up uninstalling them, and just pitting it back to factory. They're sitting in my garage until I decide what to do with them.
Its NOT a problem with a single/dual filament bulb. The TLG LED switchbacks are dual filament. The LED lights have less resistance, which is why you need to install a resistor. The resistor is supposed to emulate the high resistance dual filament incandescent/halogen.
Originally posted by mitchjl22: The LED lights have less resistance, which is why you need to install a resistor. The resistor is supposed to emulate the high resistance dual filament incandescent/halogen.
Is a answer from TLG etc and using resistors make system to eat ~same power then 2057(OE) 1157 or 2357 bulbs on front connected to turn circuit. when connected to park circuit ~35 watts each resistor vs 2-3 watts for park filament each. If you connect resistors to park circuit then can blow a fuse or worse. Park circuit won't take that much load.
(Re)read LED poisoning I recently updated the LED page.
LED anything in front park/turn light can cause problems because front marker. See my Cave, LED Marker Light Very short story, Marker lamp uses front bulb resistor values to make it work and flash. Can try to use LED for marker lamp but don't hold your breath.
Originally posted by tshark: I didn't read the LED poisoning page, true, but this should work then with a 2-3w resistor, or resistance that, with the LED, totals that. Is there any was to make these work? I also read elsewhere that these are illegal. The statement was that this caused confusion, and the lights must be in separate housings.
Watts for resistor depend on Ω used etc. 6Ω eats ~35w at 14v. Is why they sell 6Ω resistors at 50w. So can it work? Not with 6Ω connected to park circuit. And be careful how you mount a big watt unit... Heat can do damage or melt plastic.
How to fix? Not sure. Any ballast resistors eats power so any power save by using LED, Resistor use can cancel most or all of that. Resistors can eat more watts than normal bulbs. (Fiero Bulb data in Lighbulbs)
(New electronic Flasher does make a big difference even w/ normal bulbs.)
Legal... Try reading your State's laws and any state you likely drive in. Most are online now. (Read actual law. Not DMV inspection requirements. Can and often does matter.) Many Cops love to ticket out of state drivers because most will just pay the fine.
In Very short... Most states, Fog/Driving lights need their own housing and separated enough from park/turn light to not confuse or hide turn bulb for other drivers. Fog light have different focus and aiming requirements than driving lights. Many OEM DRL turn off when turn light is active for same reason. Many will turn off DRL when HL are on. For 1, Many OEM DRL have glare problems using at night. "Switchback" is an aftermarket attempt trying to add DRL/fog/driving lights w/o added extra housing and electronics and many cases is a major fail. May look OK in a driveway but can cause problem on the road.
answer from TLG etc and using resistors make system to eat ~same power then 2057(OE) 1157 or 2357 bulbs on front connected to turn circuit. when connected to park circuit ~35 watts each resistor vs 2-3 watts for park filament each. If you connect resistors to park circuit then can blow a fuse or worse. Park circuit won't take that much load. 
