LED bulb replacement causing issues (1 Viewer)

[keithianminton]

I have 1978 fJ40 that I have replaced all my tail light (turn, brake and reverse) with LED...two bulbs on my instrument cluster and the heat / defrost indicator light and dash light with LED. I am having issue with when I press brake pedal before turning it on the instrument panel and heat/defrost indicator light and dash light come on. Also the parking lights come on. When driving and I turn the left turn signal it will only work when I don’t have the head lights on or the brake pedal pushed in. Also my right turn signal light does not come on all the time when I turn it on and the high beam lever can be tricky...have to play with lever to keep high beams on. I have a lot going on...could switching out incandescent bulbs for LED be causing the issue...perhaps grounding issue in brake light...or issue with turn signal relay on column. Frustrating...thoughts?

 

[pb4ugo]

Your description of all the weird issues going are classic symptoms of bad grounds.

 

[brooklyn]

I have read that you need turn signal flasher that supports the LEDs. I have considering LEDs so I am curious has this turns out - good luck

 

[Strait Cruisin]

I did a full conversion to LED, except headlights but including all the cluster bulbs. Its very straight forward and the flasher must be replaced but the condition above is a classic loss of ground.

 

[keithianminton]

Well...I resolved my LED bulb issue....all I needed to do was replace the original flasher with an electronic flasher. Hope this helps someone.

 

[rpdoug]

Well...I resolved my LED bulb issue....all I needed to do was replace the original flasher with an electronic flasher. Hope this helps someone.

What did you use for an electronic flasher?

 

[keithianminton]

What did you use for an electronic flasher?

I went to NAPA and the have a two prong flasher for $13....works good...when you connect you will need to make your own connector wires as the prongs do not line up with the wiring harness. I would recommend wrapping the connectors on the flasher with black tape as I shorted out my fist flasher when it came in contact with metal.