I'm having a bit of trouble today. I cannot find the fuse panel in my new to me 1991 Ultra. Not under the seat. Not under the left side panel - theres a radio component with a capacitor there. Owners manual has no mention of a fuse panel at all. With the bike came a CD that seems to be a service manual - no mention of a fuse panel there either. This is very strange - I have had a couple mechanically inclined buddies here today and we can't see it.
Could it be under the fuel tank? Not very convenient for something like that.

 

There are no fuses on a '91 Ultra. There is a main breaker under the cover on the oil tank or under the seat, left side (can't remember). There are 4 breakers under the speedometer/tach dash. Disconnect the speedo cable under the dash, 2 socket head screws on the dash then lift up and back. Disconnect the main harness, speedo output wire (white) an fuel gauge wire (yellow) and you can set it all out of the way.

Left to right - acc / ign / lights / radio memory (constant hot)

Oops. egg on face - Spoke out of turn... Ultra, duh, intercom and all. Yeah, the photo of the board is radio and intercom stuff. The main ones are under the dash...

 

Thanks very much for the speedi reply t150vej, that is very helpful.
Tho I have a bit of a draw so I was planning on pulling fuses until I got close......
Fun .... :-) .
Does the radio memory draw pretty heavy?
Thanks, Frank

 

I keep getting FLHT Ultra mixed up with something else... LOL It's a bit more involved getting to the breakers on that one, but basically the same place. May be easier to pull the radio. Hopefully some of the other guys will chime in on the easiest way to get to them.

The place to start is to disconnect one of the battery terminals and use a DVOM that has an amp setting to see how much it's actually drawing when off. Yes, the radio (and clock if it has one) will pull power and it should be minimal. However I can tell you if it sits much over 2-3 weeks without being started and run, the constant draw will pull the battery down to the point it may not start. Best to get and use a battery maintainer and have the battery load tested and replaced if/when necessary.

 

Thanks again t150vej. That is what the previous owner said. About 2 weeks. I thought that was excessive but maybe not. He used a battery maintainer and I use them as a rule too. So I will on this one. The battery on my Dyna is 9 years old so the maintainers really do the job. I'm gonna install a new one in it this year just cuz.....

 

Try removing the headlight housing from the fairing. That should give you enough room to see the 4 circuit breakers that I believe are mounted toward the front of the top tree.

Here's a link to the wiring diagram & trouble shooting guide for your bike

https://serviceinfo.harley-davidson....inContent=true

 

Thanks guineapig, I will refer to that document, I am sure that will be very helpful.
Frank

 

What is the actual battery drain? Pull the outer fairing, then while monitoring the current drain with an ammeter in line with the negative battery lead, everything off, disconnect the radio at the plugs. That will tell you. There isn't an alarm hiding on there somewhere, is there?

 

Thanks Dr. Don't see any evidence of an alarm.
My current plan is to check the level of draw at the batt if I could with my VOM and go from there.

 

One other current drain potential source is the voltage regulator. Check it by (with your ammeter in series at the battery negative) disconnecting the voltage regulator at the main breaker under the seat.