4corsa

When you say "...the wire should have battery voltage", which wire? The wire to the oil pressure switch, or the hot wire to the bulb?

I have not checked this, and first need to locate the oil pressure switch.

Also, as a verification, I clipped my test light to the blue wire and touched the probe to the red wire with ignition on and did not light. Definitely not getting ground. I'm thinking may have to cut the blue wire and connect the blue wire terminal directly to the frame, unless someone has a better idea.

Ok terminals cleaned, scuffed, sprayed and re-connected no difference for the warning light. Bulb won't light when touched to the two bare terminals in every which way, but it lights when touched to the red wire and grounded test light with ignition switched to on.

Thanks Docc, I'm on it.

I don't believe it's a common ground.(but not sure). It's isolated going to and from the first connector block. Anyone happen to know where this circuit is grounded to the frame? Now thinking this could be related to my intermittent starter issue. Need to find the ground point and clean it up.

...as seen here:

Turns out the blue ground wire is not grounding. When I touch the bulb contact wires to the red wire and my grounded test light probe, the bulb illuminates. Now what?!

Well, the socket is getting power, test light illuminated with key turned on, and went off when key went off. Has to be something messed up in the socket base. Bulb does seem loose when inserted.

Forgot one

Ok, so replaced the oil pressure warning light bulb, and still does not illuminate when key is turned on. Disassembled the ignition module and connections look good at both ends. Regarding the occasional starter not engaging, I'll check the starter button next, but that issue may have been solved at the relay. Hard to tell right now as it only seems to happen when the engine is hot. So far engages the starter 100% of time when cold. But the oil light remains a mystery. Once I have the ignition back together I'll try a test light in the base of that socket (yup, should've done that first [emoji848]).

First question is, are you referring to the Tamburini 900SS of the 90s, or the 900SS of Terblanche that followed? I owned a '95 900SS/SP that I loved. It evokes a similar Italian lust as my V11 LeMans, but as everyone says above, they are very different bikes. The Ducati is all about the chassis, suspension, and fabulous lightweight handling. The only reason I sold mine is at 6'-1" I was never able to get my butt far enough back where it should be due to the position of the rear seat cowl. It's not a great bike for those over 5'-10". Otherwise I highly recommend them - so much fun to ride, but not for long distance like the V11.

Yup - the relays were the first thing I checked, I just put all Omrons in a couple weeks ago. I removed the relays and checked all the female spade connectors - all look great (bike only has 13k miles and always garaged). So just as a check, I switched out the #1 Starter relay with the #3, in the unlikely event the #1 Omron was faulty. I also rechecked my connections with the starter and kickstand shutoff.

You are correct, but have a look at the attached instructions for changing Dashboard Warning Lights: "Detach the resetting pin A". Go figure.

Thanks Docc, you are correct, the opening for the pin is slotted so no need to remove. Perhaps earlier models were not slotted holes and that's why the shop manual says to remove it?

...also, for removing the tripodometer pin, do you literally just pull it out? The service manual just says to remove it. Thanks.

Thank you po18guy and Docc! I ordered the T5 bulbs last night and will be taking things apart tonight. I am suspicious of the ignition switch wiring, as I've had a couple incidents where the starter wouldn't engage until I turned the key off and back on once or twice. I'm assuming once the two screws at the underside of the ignition housing are removed it pulls apart to expose the wiring.

Thank you Lucky Phil - will do.

Is the oil pressure warning light supposed to illuminate when key is switched to "on"? Having owned my 03 Le Mans for a couple months now, I've never seen it illuminate. The Owners Manual is not clear on this. All other dash lights work. Just wanted to check before ordering a replacement lamp and pulling things apart. Thanks.

SOLD

$20 shipped to the lower 48. PayPal only.

Very interesting - thanks for sharing. I was all ready to purchase one for my recently acquired '03 LeMans, and went out to the garage to measure the wire length. Turns out mine doesn't have a lamda sensor. Very strange given that my '03 Le Mans dealer brochure proudly features it. Perhaps the early '03s didn't have them yet.

Very rough first prototype. 9" long x 5" tall x 3"to 4.5" wide. Significant storage when you figure x2. Attachment will be a challenge - only one bolt in that area to work with. Thinking plastic reinforced waterproof black nylon (similar construction as the Tekno bags).

Yes, SuperMoto Italia, a certified Ducati mechanic. Said it wasn't the first one he's done on a 900SS, and always the rear cylinder. He of course did a compression and leak down test first. I can't remember the numbers - was 20 years ago.

You're right, it is more like 6°