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Author Topic:   Adding KILL Switch to 1999 Yamaha
gturner posted 07-23-2006 07:21 AM ET (US)   Profile for gturner   Send Email to gturner  
I'm trying to add a KILL circuit to my 1999 Yamaha 25-HP 25ESHX outboard motor. I found a Yamaha< color code on line but [the one this author located] didn't mention a kill wire. Any help would be appreciated.

[There is a very good listing of color codes for many manufacturers in the REFERENCE section, and it include the Yamaha color codes which are not in conformance with the American standards.--jimh.]

swist posted 07-23-2006 01:18 PM ET (US)     Profile for swist  Send Email to swist     
Need more information. A 25 hp is a small engine. Is it operated from a control box on the console? Or is it self-contained (operated at the transome by tiller controls)?

Assuming you have a control box with a key/throttle etc, the kill switch is in series with the purple wire coming out of the control/box or ignition switch.

gturner posted 07-24-2006 07:41 AM ET (US)     Profile for gturner  Send Email to gturner     
Thanks for your reply, swist. I have no electrical wiring in my control box. I'm pretty much starting from scratch. I bought a used 25-hp Yamaha with no tiller handle, no control box, and no steering. I bought and installed control box, shift and throttle cables, and steering system. Now I have to add wiring from the motor to the console to handle starting and kill switch. I have the starting figured out but I need to know what color wire at the engine handles shutdown. Underneith the motor cowl there are open single conductor connectors (male and female) from where the control wires once were installed, or were intended to be. I know it isn't red or brown, that's start, so my choices seem to be white, green, or pink. There are two greens hanging out (one male and one female)- There is one white (female)- And one pink wire with two connectors attached to it(one male and one female). Thamks for your help
Whaler_bob posted 07-26-2006 09:59 AM ET (US)     Profile for Whaler_bob    
Did a google search for "1999 yamaha outboard ignition switch wiring diagram" and came up with this:

yellow is key on power
black is ground
red is fused 12v
green is tach send
white is kill at the switch and fuel level at the speedo(two seperate cicuits do not hook them together)
blue at the switch is choke
blue at the gauge is lights. there is a pigtail of one blue and a double yellow that can be hooked together to have the gauge lights come on with the key. there is also a fuse in the tach harness from the switch to the gauges.

The fifth link on the Google search page was this:
Which seems to agree with the above info.

gturner posted 07-26-2006 11:14 AM ET (US)     Profile for gturner  Send Email to gturner     
Thanks, whaler_bob... I found the white kill wire and it works great. I appreciate it very much.

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