orangem2 Posted October 26 Author Posted October 26 So after looking at my V11s wiring... I have 2 terminal strips that would fit perfectly where the tool kit tray is. What if i left the starter positive and the ground that goes to the back of the transmission case alone and mounted to the battery as is ... Ran the 4 other positives to a terminal strip and one from the terminal strip to the battery. Then did the same for the negatives but instead of a wire to the battery negative, ran the one negative from the terminal strip to another transmission or engine case bolt. Leaving 2 positive and 1 negative to hook up to the battery. The associated wiring looks like there is enough slack to do it right and not a kluge. your thoughts? 1
docc Posted October 26 Posted October 26 Good plan! I would still be inclined to wire both pos and neg terminal strips directly to the battery and leave the case ground dedicated to the main ground cable. 3
gstallons Posted October 26 Posted October 26 All of these ring terminals stacked on the battery terminals are hokey-pokey and are stupid. These things need to be cleaned up and put on strips to make it BETTER and keep from dropping one of the terminals and having troubles and no-start conditions. W/all this being said . mine are still original so don't ask how I fixed mine. 2
orangem2 Posted October 26 Author Posted October 26 (edited) Still have to fab up positive and negative wires from the terminal strips to the battery... and velcro strips so the terminal strips do not move. But I will have only 2 connections to each battery terminal. No stock wiring had to be altered in any way for this to work. Comments? Also, I am going to run the batterytender harness off the starter terminals to keep it clean. New PC545 with brass L brackets will go in when done. Edited October 26 by orangem2 3
Pressureangle Posted October 26 Posted October 26 35 minutes ago, orangem2 said: Comments? Also, I am going to run the batterytender harness off the starter terminals to keep it clean. New PC545 with brass L brackets will go in when done. Nice, this was sorta in my head as where I was going with it. On my BMW I ran the 'tender plug up to the handlebars to power my Garmin as well. 1
Tomchri Posted October 27 Posted October 27 3 hours ago, orangem2 said: Still have to fab up positive and negative wires from the terminal strips to the battery... and velcro strips so the terminal strips do not move. But I will have only 2 connections to each battery terminal. No stock wiring had to be altered in any way for this to work. Comments? Also, I am going to run the batterytender harness off the starter terminals to keep it clean. New PC545 with brass L brackets will go in when done. Since you are in there, is the ground to the ECU from original wiring? If so, VERY recomended a separate ground to the ECU. Cheers Tom. 4
orangem2 Posted October 27 Author Posted October 27 8 hours ago, Tomchri said: Since you are in there, is the ground to the ECU from original wiring? If so, VERY recomended a separate ground to the ECU. Cheers Tom. the ground to the ECU is the original ground... may i ask why? Never read any thing wrong with the ECU case ground!?! 2
knumbnutz Posted October 27 Posted October 27 On 10/24/2025 at 7:53 AM, orangem2 said: Whoever at Moto Guzzi that designed the wire harness and thought multiple pos and neg wires to the battery was a GREAT idea should be made to remove and install a battery on a V11 for 10 years straight. What a complete joke for a bike made in 2004. No wonder these bikes have so many troublesome elec problems. Got to be a better way... rant over. There is a better way.. rewire and piss off all the relays. I put an M-Unit on mine and thats the end of issues 1
orangem2 Posted October 27 Author Posted October 27 39 minutes ago, gstallons said: M-Unit ? explain The Motogadget M-unit is a fully digital wiring system for custom bikes. its a GREAT product but i have no issues with my bikes wiring to the point it would require an entire new harness. My intent was to just tidy up the battery connections and make it a little more robust. But what is wrong with the ECU case ground as is... please explain. 3
audiomick Posted October 27 Posted October 27 3 hours ago, gstallons said: M-Unit ? explain This system, as @orangem2 mentioned: https://www.motogadget.com/en/collections/electrics Seems to be fairly popular here amongst people who want to minimise the wiring loom. I've seen it mentioned very often. 1
Pressureangle Posted October 27 Posted October 27 7 hours ago, orangem2 said: The Motogadget M-unit is a fully digital wiring system for custom bikes. its a GREAT product but i have no issues with my bikes wiring to the point it would require an entire new harness. My intent was to just tidy up the battery connections and make it a little more robust. But what is wrong with the ECU case ground as is... please explain. Can never have enough good grounds. I can't speak to historical anecdotes, but on mine the case ground disappears into the harness, and if experience is a teacher it probably goes through at least one connector and to a frame lug with paint on it. Prone to failure. An extra ground wire with a proven path is little cost in time and materials at least for peace of mind. I also see that some ECUs are upside down- mine and Docc's early have the backside with harness connector on top, mounted to rubber vibration isolators. This must be a year/production split. On my '97 sport, the regulator ground was through the painted fairing frame, through the painted fairing frame/frame joint, through the painted frame/engine/trans joints, to the main ground lug on the transmission. I ran wires connecting points across all of these joints. Your ECU operates obviously with a ground, but your injectors in particular are fired by what they call a pull-down circuit- that is, they are switched on the ground side (on most EFI, not certain here) because the current load on the switches is far less on the ground side than the hot side. So inadequate ground will result in poor injector performance at least. 4
orangem2 Posted November 3 Author Posted November 3 The final edition... Ran all the positive and negative wires to 2 terminal boards and 1 12ga wire from the terminal boards to the battery. I am waiting on some stainless top to side terminal adapters to complete the battery change. comments? Also replaced relays with new picker and the 6th relay was for the startus interuptus kit from MPH. 2
docc Posted November 4 Posted November 4 VERY nice! Welldone, sir! After some miles (a couple tanks of fuel), go over all of those battery terminal and junction block fasteners and snug them up. (Something I learned the hard way when one of my junction block terminals loosened and gave me grief.) About once a year, I try to snug and DeOxit all mine as routine maintenance. 1
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