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help me wire new switches into an old guzzi

P

pecheramie

Just got it firing!
Joined
Nov 10, 2008
Messages
7
Location
New Orleans
OK Guzzisti - I need help!

Left side switches on my 76 850 T3 gave up and I purchased a modern switch cluster from MG Cycle (lights, signals, flasher, horn). My first attempt to splice it into the Molex harness was a complete failure. The headlight came on when an unused strand grounded to the frame! That was the only sign of life. I brought the MG wiring diagram into work (10 wires) and the plug scheme for the new switch (9 wires, one unused) and an electrical engineer I work with could only say "great wiring diagram - don't see these much anymore." His advice was to get some jumpers and work through it.

I am hoping someone out there did this already and took notes! Yes, I am lazy and easily frustrated. if anyone out there can provide me the wire-to-wire cheat sheet they will have my eternal gratitude.

I know the modern switches probably use different colored wires than mine - one of wire colors on my new switch didn't match the color stated on the package. I am more interested in the new switch function to MG harness color match - if that makes sense; i.e. "new switch turnsignal main to Moto Guzzi red/black wire"

I am also guessing that I will be losing a function due to the mismatch in the number of wires.
 
Many years ago I installed a Suzuki switch on my t-3. Piece of cake. Scan the schematic of the switch to PDF and post it. I'll take a look and get back to you. The one color mismatch probably isn't much of an issue, it will probably correlate to the one you need, that is if the schematic says a blue wire, and the switch doesn't have a blue one, but one that isn't listed on the schematic, call that one "blue". BTW, when splicing into a harness, stagger your splice connections to keep the size of the splice bundle down. Also don't use crimp connectors, solder and use shrink sleeve for each splice.
 
thanx - it may take a few days - super busy at work, which is where i will have to scan - but i will try to do it asap
 
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