Low voltage on one circuit?

[DucHead]

I have a Fash2Pass garage door opener wired into the flash-to-pass circuit on both my bikes.  One day the opener on my Monster began working only when within a few feet of the garage door, then it worked only within a few feet of the receiver with the garage door up, and then not at all.

I disconnected the transmitter, and re-connected it to the Monster brake light circuit and it worked fine.

I then checked the voltage across the flash-to-pass circuit on the bike and it read 8.7 V, whereas the brake light circuit reads 12V.

What would cause the flash-to-pass circuit voltage to (apparently) decrease?   

[Speeddog]

The headlight flashers seem to quit working after a while.

I suspect it's just road crud/bugs getting in, as it's on the front of the switch housing.

[DucHead]

The headlight flashers seem to quit working after a while.

I suspect it's just road crud/bugs getting in, as it's on the front of the switch housing.

Thanks Speeddog, I'll take the switch housing apart and clean it out and see if that fixes the problem.

[battlecry]

If it does, why don't you smear some dielectric grease on the contacts?  It may help prevent corrosion there.  You can find it at most auto parts stores.

[DucHead]

If it does, why don't you smear some dielectric grease on the contacts?  It may help prevent corrosion there.  You can find it at most auto parts stores.

Will-do-o-rama!!  Thanks mang!!