Key switch help

[wyopsycho]

Working on my buddy's big dog k9
I have the old switch and the new switch
The old switch has two wires and one plug
New switch has four wires and two plugs
What do I do now?
I've replaced headlight turn signals and foot pegs this far. Need to do license plate bracket next but I'm a one thing at a time guy

 

[KaptinAmerika]

Using an ohmmeter find the two connections with continuity when you turn the switch on.
If your running EHC or PDM its just a ground signal.
Otherwise its the same procedure just allowing 12 volts through instead of a ground signal

 

[wyopsycho]

Did that.
Hooked it up all back together. Turn the key to on position hit run then hit start it makes a half revolution horn honks once and flashers come on

 

[Iman]

i got a new switch also like that - i do not use one of the plugs. i believe thats all they made before bdpm went under. it was for a bulldog. I think its a 2 position switch but just heat shrink it up and don't bother

 

[wyopsycho]

It's like an alarm is on

 

[KaptinAmerika]

What system is running the bike?

 

[wyopsycho]

oem original system 07 big dog k9
the two plug ins beside the battery, when my buddy came to have a look if we push on the one closest to the outside pushing it sideways when I hit run then start it starts if no one pushes on that plug it makes a half revolution honks horn and flashers come on.

 

[C.A. Jones]

Iman is correct. The switch you're using is for EFI/Bulldog...but it will work just fine for a carb app. You have a battery that is shot or charging system failure. (or starter is drawing too much)
C.A.Jones V-Twin | Custom Builds, Parts & Service

 

[wyopsycho]

I just talked to the owner of the bike he said same thing anytime battery is low it has done this I have it on charge now

 

[francoblay1]

Sorted? How?