Evo-R fog light issue (need help plz)

DIGItonium · 07-28-2015, 09:11 AM

When you measure all the wires, one is constant (12v), and the other is only constant (12v) when you hit the brakes? I don't know how the EVO-R light works, but if it does the flashing internally, then something is wrong with it.

It's 12v, so you can wire up +/- to battery terminal. Based on my assumptions the 3rd wire is "switched," so momentarily connect it to the + terminal. If it doesn't flash, then the internal flashing circuit isn't working.

Sicnarf · 07-28-2015, 09:16 AM

Yeah thats it, 12v constant on one wire, 12v constant when brake is applied. But nothing is flashing and the light is always fully light up

DIGItonium · 07-28-2015, 09:53 AM

Quote:

Originally Posted by Sicnarf

Yeah thats it, 12v constant on one wire, 12v constant when brake is applied. But nothing is flashing and the light is always fully light up

Alright, so the internal flashing circuit isn't working. Ask for a new one.

SouthArk370Z · 07-29-2015, 10:30 AM

Quote:

Originally Posted by Sicnarf

... One thing I notice is that my car is, for some reason, with light off and brake pedal off, is having the fog light fully light up and oem tail light like i was on day running light mode (half the intensity of the brake light)

That sounds like a wiring problem or a bad module.

Take the module out of the circuit. If fog light straightens out, double-check your wiring*. If wiring is correct, then module is bad. See also DIGItonium's test procedure above.

*Edit: Best to have someone else do this. One tends to get tunnel vision after a while.

Sicnarf · 07-29-2015, 05:36 PM

Already tested the wiring , got it done by a electrician friend

DIGItonium · 07-29-2015, 11:14 PM

Just my simplistic assumption:
The constant 12V (ignition) feeds the LED driver or transistor (FET). The base/gate is pulled down to ground so it can stay off. The timer chip gets power from the brake wire and normally starts pulsing immediately. The output of the timer chip feeds into the base/gate of the transistor, possibly pulling it high (12V) to turn it on driving the LEDs.

07-28-2015, 09:11 AM	#16 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	When you measure all the wires, one is constant (12v), and the other is only constant (12v) when you hit the brakes? I don't know how the EVO-R light works, but if it does the flashing internally, then something is wrong with it. It's 12v, so you can wire up +/- to battery terminal. Based on my assumptions the 3rd wire is "switched," so momentarily connect it to the + terminal. If it doesn't flash, then the internal flashing circuit isn't working. SouthArk370Z likes this. __________________

07-29-2015, 11:14 PM	#21 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Just my simplistic assumption: The constant 12V (ignition) feeds the LED driver or transistor (FET). The base/gate is pulled down to ground so it can stay off. The timer chip gets power from the brake wire and normally starts pulsing immediately. The output of the timer chip feeds into the base/gate of the transistor, possibly pulling it high (12V) to turn it on driving the LEDs. __________________ Last edited by DIGItonium; 07-29-2015 at 11:19 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Key Fob Issue/Tire Pressure Light	Bidness91	Exterior & Interior	16	07-10-2017 12:30 PM
Key system warning light issue!!!	jenny	Nissan 370Z Warranty / Scheduled Maintenance / Servicing / Repairs	6	01-24-2012 02:10 AM
map/dome light issue	ZoroItaliano	Exterior & Interior	6	12-15-2011 09:10 AM
Check engine light issue	Xsad	Intake/Exhaust	2	08-14-2011 01:21 AM

07-28-2015, 09:16 AM	#17 (permalink)
Sicnarf Base Member Join Date: May 2013 Location: Val-d'Or Posts: 75 Drives: 370z sport 2012 Rep Power: 11	Yeah thats it, 12v constant on one wire, 12v constant when brake is applied. But nothing is flashing and the light is always fully light up

07-29-2015, 05:36 PM	#20 (permalink)
Sicnarf Base Member Join Date: May 2013 Location: Val-d'Or Posts: 75 Drives: 370z sport 2012 Rep Power: 11	Already tested the wiring , got it done by a electrician friend