Puig LED Turn Signal Relays and Resistors

When you swap bulb indicators for LED ones, it is common for them to flash too fast, not flash at all or trigger a warning on the dash. The cause is the flasher relay: many bikes use a bimetallic one whose rate depends on the current flowing through it, and an LED draws a fraction of what the bulb did. With an electronic relay the problem rarely appears. There are two ways to fix it.

LED relay or resistors

Replacing the relay

This is the cleanest solution. Find the original relay, count its pins and choose the matching Puig unit: there are 2, 3, 4 and 7-pin versions. On most bikes the hazard lights keep working normally. It is not an option on bikes without a dedicated flasher relay, where another control unit handles the function, and if several relays are involved in the circuit, replacing just one may not be enough.

Adding resistors

They are wired in parallel, one on the right side and one on the left, and give the circuit back the load it had with bulbs. There is one version for when you change all four indicators and another for when you change only two, one per side. The trade-off is that on most models the hazard lights stop working properly, and because they turn the extra load into heat, they should be mounted on a metal part, away from plastics and wiring.

Whichever you choose, check afterwards that the rate sits between 60 and 120 flashes per minute, which is what the regulations require. Bulb indicators need none of this. You will find LED and bulb models under Puig turn signals, more designs among our motorcycle turn signals and the rest of the brand under Puig.