hi out there need some help put new blinkers on my99 wide glide all work fine except somtimes when engine is running left front comes on wont flash        where do i look cheers

check for a short or a bad earth....had the contols apart lately?

 

Are new blinkers incandescant or LED?

As als1200 says,,,

flasher unit needs resistance to cycle, crook globes or bad connections can cause unit to stay inactive.

"sometimes when engine is running",,sounds like loose connection vibrating.

(if flasher unit was cactus you'de expect both sides to be doing the same)

ive got similar issues , changed blinkers but not to led type , blinkers come on but wont flash , same model bike , howd u go ?

 I thought that with harleys the feed wire goes from battery to indicators then to switch then back through flasher to finally earth meaning you have a possible intermittent short somewhere between the indicators and the switch, causing them to come on. Possibly a nipped wire. I know this was the case with my mates left indicator on his 98 softail.

But please disregard this if i'm wrong., as my missus tells me i'm wrong a lot lately....