I had the same problem. If twisting the rear assembly even momentarily makes it work, then the ground is bad for the rear light. This is caused by rust. Just remove the rear turn signal and grind the rust off where the bolt from the turn signal attaches to the turn signal frame assembly.
--- In Honda-C70@yahoogroups.com, "Ashraf" <lexustech1@...> wrote:
>
> Hello C70 lovers. My turn signals are acting up.
>
> The fronts would blink once and then just stay on. I checked all bulbs and found them good. I checked connectors from turn signal switch all the way back to the rear blinkers.
>
> I decided to buy a new 12v flasher from ebay. Plugged it in and now both fronts blink strongly but the rears kinda flash together very dim, and the taillight also seems to blink slightly. The battery was just charged and no difference weather it is running or not.
>
> How complicated can this be? Help!!
>
> BTW has anyone used the electronic no flash blinker from dratv.com?
>
> http://www.dratv.com/275k.html
>
> Thanks.
>
1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs:
http://www.shlaes.com/Vehicles/Scooter.htm
http://www.velodrome.com/HondaC70/HondaC70.html