Tailight Diode
Hi folks, I could use some help with my tow wiring. I've been flat towing my 2005 Toyota Corolla for years. Recently, I was made aware of my left rear turn signal,on toad,not moho not flashing. I tri...
Forum Discussion
Yes, a faulty diode can cause your failed turn signal problem. Each light function has its own diode to prevent feedback from the toad to the coach and vice versa. There should be two diodes for that turn signal, one connected to the coach wire, and one connected to the toad wiring, with the other ends both connected to the light bulb.
