Does anyone have any knowledge on Datatool alarms and their wiring please? The wiring diagram for them is not available anywhere (for obvious reasons). My 1999 748 has been completely stripped down and rebuilt so that all corrosion could be treated and virtually every nut and bolt replaced. This involved disconnecting and removing the wiring loom for a Datatool alarm and immobiliser that was fitted by the dealer when the bike was purchased new back in '99. I thought I'd taken photos of everything as I was dismantling it but it appears not I was going to leave the Datatool alarm and it's wiring loom out of the equation when I re-assembled everything but it appears I can't do that as the fuel pump won't prime unless a 2pin plug from the bike's wiring loom is plugged into a socket from the alarm's loom. Thus I had to re-install the alarm and it's loom. All good, the bike starts and run and all lights and electrics work but I've a couple of errant connections on the alarm loom left over and have no idea where they go. The first, above, I'm guessing was around a bolt and secured to the frame or some other earth point. I'm guessing this from a) the shape of it and b) the corrosion left on it. Interestingly, whilst 2 wires, a blue and a yellow, are visible where they meet the ring connector, if I trace the wrapped cables back to the loom, there are 3 wires that enter the wrapping; the above 2 plus a black one. The second, below, is a single black cable, wrapped in insulating tape, that terminates in a bullet connector. It runs to the rear of the bike along with the connections that connect into the indicator circuits. However, there's nothing I can find to connect it too. Thirdly, I've a 'spare' two pin socket that comes out of the alarm loom in the area near the -ve terminal of the battery. It branches out with another 2 pin socket which connects to a 2 pin plug coming out of the bike's loom and I know that those two connect together as I marked them with corresponding marks (coloured tape). If anyone can shed any light on where these 3 should connect I'd be grateful. TIA.
I 've removed many Datatool alarms but I have no idea what each wire does, as you know they are all black. If I had the time I could trace them all back to the circuit board and work out their individual functions. The alarm has two actions that will prevent the bike from running. It will break the starter circuit and the fuel pump / ignition circuit so these circuits have to reinstated. As you have found there is a 2 pin plug that breaks the circuit to the fuel pump relay. Simply unplug the alarm and bridge the loom connector, ideally with a suitable plug with wires joined. The alarm will also break the circuit to the starter solenoid and may still be going through the alarm so you are going to have to track and wires to the solenoid the join the ends. The rest of the connections are battery 12V , ignition on 12V, ground, connections to the indicators and to an LED warning light if one is fitted. These can all be cut. Basically, if the alarm wire is Teed into a loom wire it can be cut off. If it breaks a loom wire the ends need to be found and joined.
Plus one for removing. Didn’t they also have a wire to a switch that fixes to the seat catch? So that if any unscrupulous tearaway try’s to pop the seat up to get to it the alarm triggers
Yes, there is often a microswitch positioned so that it is triggered if the seat is lifted. It goes straight to the alarm wiring though and doesn't connect to the bike wiring.
Thanks @Derek. After several hours working on it, and going through the photos I took with a magnifying glass, I worked out where the first wire went, it is indeed a frame earth, in addition to the one connected to the battery -ve post. I could not for the life of me find anything to connect the 2nd wire in my photo above to. The 3rd one mentioned above was actually the socket for the rear brake light switch to connect to but as it was coming out of the alarm loom and not the main loom it threw me off track. however, having worked out where everything went, apart from the one in the tail unit I was having all sorts of problems with it. The indicators didn’t flash when the alarm was armed or disarmed when they used to - no big deal really, but the motion sensor was ridiculously sensitive, more so than it had ever been before. So much so it just kept going off . In the end I opened it up, removed the internal battery, disconnected the alarm from the -ve post of the battery and from the starter solenoid and tucked those wires out of the way. The alarm is now disabled but it’s loom is still connected to the Ducati provided plugs under the seat and to the rear of the battery. Without those connections the fuel pump circuit is disabled. I’ll get some proper connectors to bridge those (rather than a staple shoved in them, which I had earlier) and then I can remove the alarm and it’s loom completely. I have now increased my knowledge of Datatool alarms and their wiring by an order of magnitude.
