wiring diagram

[redbay11]

hello
i have Yamaha ME 421 sti engines. can any one help me. i need a wiring diagram for the engine. when i turn the key no lights or alarm comes on. it did come on once but when i tried later it didnt work, for some reason the one way diode is disconnected but even with it connected it does not work.
i hate electrics

cheers

cam

[Jelly]

Cam
That sounds like you have main power issue, have you checked the fuses, kill cord switch and the earth cable from the rear of the engine to the battery.
The Yamaha manual is worth getting.
Good luck
Jelly

[outboardtech]

your best bet would contact BBMS Marine Swanick and speak to Paul . He is the MAN you need to speak to on this . He will help you out .

[mickyspec]

have you checked the fuses that are found beneath the black engine mounted cover ?
also check the wiring harness where it plugs into the control unit "black box thingy"

[biffer]

down the side of them engine where the control cables are there is a round tube inside it is a 100 amp fuses check, you've probaly blown it, it may be cable tied to the bracket below the turbo

[yam diesel man]

[QUOTE=redbay11;284143] hello
i have Yamaha ME 421 sti engines. can any one help me. i need a wiring diagram for the engine. when i turn the key no lights or alarm comes on. it did come on once but when i tried later it didnt work, for some reason the one way diode is disconnected but even with it connected it does not work.
i hate electrics

cheers

cam [/QUOTE
wondering if you found out the promblem with your instruments not lighting 100 amp fuse gone or check the 2 eye turminals all starter motor stud they can get abit gruby so clean the off with a bit enry tape . i work on the hydradrives everday i know them off the back of my hand any problems in the future gives us an email glad to help