Wiring Module

D

dave48

Junior member
Location
Missouri USA
Several months ago or maybe a year ago somebody posted a link to a site or a specification sheet for a wiring module. It was basically a black box with interconnects for lights and switches. Does anybody remember this? Wiring Module
 
I think there are some other boxes existing like that, but the M-Unit is the most advanced one (and the most expensive one I guess...).

Keep in mind that it won't provide you all necessary things you would need, as the starter relay f.e. is not capable to really serve our starter motors. It can only take up to 30A, where ours need up to 70A etc.
 
Thanks. The M-Unit is the device I was thinking of. I think it?s too costly for what I?m looking for. I?ve already rewired the ignition, charging and starting systems. All I?m looking for is something to simplify the lighting wiring.
 
Hi Dave

Don't be fooled by the promotional blurb. An M-Unit won't simplify the wiring. If anything, it makes it more complicated because you have to run input and output wires to the unit, as well as all the load wires. All the switch wiring (inputs) has to come back to the central unit, then the outputs go off to the various loads.

For example, consider a horn ...
Conventional Laverda wiring has a wire from the battery (via a fuse) to the ignition switch, then to the horn switch, then to the horn and back to earth.
With an M-Unit, a wire goes from the battery to the ignition switch, back to the M-Unit to energise its brain. The horn switch signal wire goes from the M-unit to the horn switch, then back to earth. Then the horn itself takes its power feed from the M-unit and back to earth. There's also a heavy-duty cable from the battery to the M-Unit that powers the various loads.

If you're after a cheaper solution, you could install a couple of gangs of relays that will do a similar job for a fraction of the cost. If you buy them with the interlocking bases you can mount them in banks that will keep it all pretty neat, and you can easily un-plug and replace an individual relay if necessary. Something like these: http://www.ebay.com.au/itm/250753046174?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648
Or these if you want LED indicators in the relays: http://www.ebay.com.au/itm/151314169215?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648

8 relays will duplicate the basic relay function of the M-Unit, but you won't have the smart electronics or built-in circuit breaker functions so you'll still need a fuse box. The advantage of using relays (or M-Unit) is that you only need to run small wire to the handlebar and ignition switches. CAT 5 communications cable would be OK. Only the load-carrying circuits need to be sized for the load current. The more direct wiring to devices like lights, horn, etc. will minimise voltage loss.

Cheers,
Cam
 
hi,
at the moment  am building a new harness to my 750. first of all , i bought the m-unit, the m-button and a cable set. it was expensive, but, everything came with a most qualitative touch.
i mounted the m-button in the front light case. the m-button will take the light signal, turn, horn, starter what ever you want. from there one thin cable goes back to the m-unit. from there multiple cables are going back to the consumers of course.
the box works like a distributor, fuse-box, relay. you don?t need a high beam or horn relay anymore.
and surely you need a few connections to the + and -. well, in my eyes it is a fine gadget.

m
 
Kinda reminds me of a three in one stereo system back in the day. If one component in the unit went tango uniform you had an issue. I prefer to do it the way Cam suggests, cheaper and way easier to fix if something goes wrong....
 
M-Button reduces the number of wires between the handlebar switches and the M-unit, but doesn't make it any simpler to wire up (which was Dave's stated goal). Only difference is the switch wires are connected to the M-Button rather than the M-Unit. Then there's an extra wire between the Button and Unit.

I don't doubt that the Motogadget stuff is all nicely made and does what it says on the box. And it may be exactly what some people are looking for, which is great. But it's not for me. To my mind it's a complicated and expensive solution looking for a problem.
 
Dellortoman said:
M-Button reduces the number of wires between the handlebar switches and the M-unit, but doesn't make it any simpler to wire up (which was Dave's stated goal). Only difference is the switch wires are connected to the M-Button rather than the M-Unit. Then there's an extra wire between the Button and Unit.

I don't doubt that the Motogadget stuff is all nicely made and does what it says on the box. And it may be exactly what some people are looking for, which is great. But it's not for me. To my mind it's a complicated and expensive solution looking for a problem.
Click to expand...

That's because you understand how things work Cam  ;)

  Keith
 
Did the wiring on my 76 triple using a new loom from Wolfgang. Easy to wire up, even allowing for the changes to allow Sasche/Redax ignition and alternator upgrade. Only real hassle was the standard birdsnest inside the headlight.
 
You must log in or register to reply here.
Back
Top