When I start my 93 and it's on choke, not quite warm and I gun the throttle
between 4k and 8.5 k the low beams drop out ?

When it's on high beam (same scenario) does not happen at all.

When bike is fully warmed up does not happen on highs or lows !

What ya think ? Bad high / Low switch ?

 

If the low beams drop out completely - I'd be looking at the switch.

Or like me, do they just dim with revs??

Cheers, SB

 

I notice my lights dim when my revs drop approaching a stop.

 

Sprock and Sebastionbear, IMO sounds like switch.

pmcg, battery on way out or you need to upgrade R/R, most likely R/R.

 

No Dim ( it's how I roll ) no they just drop out - I'm thinking the switch or a
short somewhere

 

I got a new R/R but the lights still dim (noticeably) at idle.

But the battery stays charged so I'm not that bothered.

 

Change the low beam relay. Mine packed up in a similarly strange way.
If main is fine then you don't have any other electrical problems to worry about.

 

What I was looking for Thanks Henry old Son

Do ya have a part # per chance ?

looking at the online Diag I see relays but they are listed as starter relays (guessing that's wrong )

http://www.partzilla.com/parts/searc...ESS/parts.html

 

I've just looked at the fiche and they're labelled incorrectly. There are two relays side by side under the front cowl to the L/H side behind the speedo. The parts list calls them starter relays but they are hi and lo beam relays. Tsk Tsk Mr Honda.

Part number is 38501-GN2-014.

I'm sure there must be loads of these knocking around at breakers. Alternatively you could probably use a standard relay. I was lucky enough to have another one to hand.
Swap over the hi beam relay onto the low beam plug or visa versa to prove fault..... T'be sure etc.

 

Good thought there Henry. I have never been that deep into the electronics on these bikes and wouldn't figure a relay but, hey, they drop out during cranking.