RadRhino / RadRover 6 Plus - Front Light Not Working & Rear Light Blinking

[droberts83]

Hi fellow Rad Owners!

My wife owns a RadRhino 6 Plus, and we've encountered an issue with the lights.

When the lights are switched on, the handlebar display indicates that they are on, but the front light doesn't work. Meanwhile, the rear light blinks continuously. If I turn off the lights using the display, the rear light stops blinking.

The brake light functions correctly regardless of the lights being on or off. I've checked all the connections, and everything appears to be in order.

Is there anything else I can do, or does something need replacing?

I took a video, which can be found here.

Thanks in advance.

[Honda Z50M]

Is there a switch on the front light ? I'm sure the standard light on my radrunner had an on/off switch, yours possibly the same?

[droberts83]

Is there a switch on the front light ? I'm sure the standard light on my radrunner had an on/off switch, yours possibly the same?

There isn't a switch on these lights. Also, the rear light shouldn't be blinking when on, it should be on/solid.

[DickB]

I have a Rover 5 so my response is based on this. I had the headlight and taillight go out. The problem was in the controller. The controller has two lighting circuits, one for head plus taillight and one for brake light, with a main board and separate identical smaller boards for the lighting. The headlight + taillight board was bad, and the taillight was bad. I don't know if the bad taillight took out the circuit board or vice versa. My failure differed from yours in that the taillight did not blink.

In your case the blinking taillight might be indication a short. You may possibly have an open connection (broken wire or loose/bad connector) or a controller failure.

If you are under warranty I would contact RAD. If not I would contact RAD anyway for troubleshooting help.

If you want to diagnose yourself, I would start by checking cable plug connections for corrosion and good contact, and any damaged wiring. Then try disconnecting the headlight and use a multimeter to check for voltage going to the headlight with lighting on; also see if the blinking taillight stops blinking. If you don't have a multimeter a cheap one would be just fine. Voltage at the connector and non-blinking taillight would suggest a bad headlight. No voltage suggest a wiring short or a bad controller. Check if the headlight comes on with the taillight disconnected. If it does, that would suggest a short or bad taillight.   

[droberts83]

Nice one DickB! Thanks for the reply and that troubleshooting information is really helpful. I do have a multimeter so will give it a go and report back.

Sadly I'm only a few months out of warranty with Rad EU, I purchased the bike in Nov 2022.