250R-dim lights

[J.D.]

Anybody run across this before?? Haven't had time to do a full diag on it yet, but so far I measured voltage at the regulator, has 3.5-5 AC volts, and I ohmed out the regulator....spec is 100K Ohm, I have 7.1 Megohm. Could the regulator be enough to make the lights dim? SHOULD the lights work with it unplugged? Because I unplugged the regulator and the lights still worked....just very, very dim. Should it have more than 5 volts before the regulator?

[Bryan Raffa]

try uping the idle and see if they get brighter.. sounds like a bad ground in the lighting system

[J.D.]

Well n/m bout the regulator....just double checked my specs and it's 100K ohms to infinity for it. Even revving it up they still don't get real bright. They do get brighter though. I was kinda leaning towards a ground, or the lighting coil is crap. Good thing these wiring harnesses are small....shouldn't be too bad to find a bad ground.

[J.D.]

Ok an update, ohm'd lighting coil, .5 ohms(spec .1-1.0 ohm) so it "tests" good. Measured voltage at light, 3-5.9 volts, but here's the kicker. It has NO DC volts, it's AC voltage at headlight. Checked voltage at wire coming out of loom from stator, it has same....3-5.9 AC volts. So I'm either thinking one of two things: Bad lighting coil, or, bad voltage regulator. It "should" be DC volts at light, right?

[Jason Hall]

A 250r uses AC voltage only. It has a AC voltage regulator, but not a regulator/rectifier. A regulator/rectifier converts AC to DC.

[J.D.]

A 250r uses AC voltage only. It has a AC voltage regulator, but not a regulator/rectifier. A regulator/rectifier converts AC to DC.

Well then this leads me to believe I've got a bad lighting coil then....anybody got one for sale?