Conecting Lanyard switch to my merc 1500

[talitje]

I would like to conect a lanyard switch on my outboard a merc 1500 , engine nr 4751477 , looks like a xs from 1978 its a sixinline , after reading some threads about the lanyard switch i stil don't know where to conect the Lanyard emergency switch , a wire coming out of the coil maybe the bleu wire ? dont want to get myself a new switchbox while figuring out .
need some help here please

 

[sport15]

Re: Conecting Lanyard switch to my merc 1500

I don't have the schematic in front of me so I don't have the colors handy, you can either Google it or get a meter and dig in..

You can go into the shift box and put the kill switch in series with the "run" position of key.

To find the correct wires, start by disconnecting the battery so you don't smoke the meter. Put the key in the run position and check for continuity across the terminals of the key. When you find the two pins that have continuity, shut the key off to make sure the circuit opens. You can then put your kill switch in series with one of terminals and the wire you just took off it... When you trip the kill switch, continuity is broken and it will act like you shut the key off.
When all is put back together make sure you did not put the switch in series with the hot lead to the battery, if you did, it will not stop the motor, it will just keep you from cranking...

 

[Chris1956]

Re: Conecting Lanyard switch to my merc 1500

Talitje, You have the distributor ignition on that motor, right? If so, you want to interrupt the +12V that go to the white wire on the switchbox, as that powers the ignition. You will likely find that the white wire in the harness is the one to splice into.

 

[Chris1956]

Re: Conecting Lanyard switch to my merc 1500

It is likely that you motor is a bit older than 1978. '77 was the last year for the inline 1500. Merc had a 1400 in '78 and '79, and of course the 115HP inlines went for a few more years.

 

[talitje]

Re: Conecting Lanyard switch to my merc 1500

thanks for the reply's , i named the disibuter , the coil exuse me ,i did read :'' i need a wire coming out of the disibuter , i thought i need to interupt the ground somewhere at least i did read something like that (months ago and the forums are gone), conecting the Lanyard to the ignition was my idea, but i was reading old killswitch forums on i boats a few months ago (when it was stil freezing)and if i'm not mistaken i wil fry my switch box or something if i do ,and i can't find the forums back , i did save a schematic ,that i can't find back eighter on i boats , but can i trust this schematic ? is it aplyable fore my engine (ENGINE NR 4751477) in the past i wrote a 1150 it had to be 1500 and and it seems to be a 1977 model (i just forgot), is there anybody out there with this (still running) model engine and a lanyard conected to it ,please shed some light over here,chris , sport thanks a lot , i need to be very sure , here in Holland the parts are rare and much more expensive than in the United States , i just dont want to fry anything ,is there anybody out there with this (still running) model engine and a lanyard conected to it ,please shed some light over here

 

[talitje]

Re: Conecting Lanyard switch to my merc 1500

could not upload schematic 109.4 kb bytes and i downloaded it from i boats things change , but on the schematic is shown that (when facing switchbox):''
on the right side of the switchbox the lower wire is the ground wire that needs to be conected to lanyard , whats the right thing to do ?

 

[Chris1956]

Re: Conecting Lanyard switch to my merc 1500

Talitje, I understand your concern to get it correct. Why not test it to be sure. Put a voltmeter (12Volt DC scale) on the white wire on the switchbox (starboard side of motor second terminal from top). Connect the negative lead of the voltmeter to ground (engine block) (do you folks say "earth"?). When the ignition key is set to run position, you will see +12V on the white wire. When the ignition key is set to off, you will see 0 volts on the white wire. The red wire directly above the white wire is always +12V DC.

 

[Scaaty]

Re: Conecting Lanyard switch to my merc 1500

I just run 2 wires from the switch to the motor, through the control cable opening, ground one on the front black panel, and other to the bottom brown wire on the electrical box..right in front (and that side) of the distributer

 

[Chris1956]

Re: Conecting Lanyard switch to my merc 1500

SCATTY, His motor is a battery driven CDI ignition system. The ignition key interrupts the ignition by interrupting the +12V to the white wire. If you ground the switchbox, won't you have created a short circuit, which will run down the battery? Will that be good for the switchbox?

 

[Scaaty]

Re: Conecting Lanyard switch to my merc 1500

SCATTY, His motor is a battery driven CDI ignition system. The ignition key interrupts the ignition by interrupting the +12V to the white wire. If you ground the switchbox, won't you have created a short circuit, which will run down the battery? Will that be good for the switchbox?

?? My take is its a Lanyard for a kill switch, which would mean ya got tossed out the boat at speed, which I wouldn't worry too much about the battery about that time..I dunno, maybe I'm reading the question wrong. On my 72 inline its that way, and thats how the Merc Guru of mine does all his motors. Don't think the XS (I had one at one time, not a 78 though.) should be different, but again, I don't know. Got an A+ in auto shop, D- electric shop years ago..so second guess any electrical reply of mine...I've let the smoke out of a lot of wires..

 

[talitje]

Re: Conecting Lanyard switch to my merc 1500

I would like to be able to do a compresion test , just by pulling the emergency Lanyard switch , and stil be able to crank the engine by starter motor using the key, without the motor firing up , so when i pull the lanyard switch the engine must shut of and stil be able to crank without firing up , then i know i've done a nice good job , more light over here please

 

[Windykid]

Re: Conecting Lanyard switch to my merc 1500

If you have the spark plugs out for a compression test ,I doubt very much it will start or fire up without the spark plugs.

 

[talitje]

Re: Conecting Lanyard switch to my merc 1500

no pissing contest hey , if i would like to test a random cilinder , i just pul that spark plug out and do my test ,want the Lanyard switch conected properly , more light over here

 

[Windykid]

Re: Conecting Lanyard switch to my merc 1500

No pissing contest but you will not get a correct reading with the rest of the plugs in.

 

[talitje]

Re: Conecting Lanyard switch to my merc 1500

okay did not know about the compresion reading , but that's another concern for another day , i would stil like to be able to crank the engine with the Lanyard switch of , thank a lot for the reply's , i think i'l go for chris his idea , using the white wire

 

[talitje]

Re: Conecting Lanyard switch to my merc 1500

i'm just a litle concerned about suden power surges , when using the Lanyard switch inproperly on my engine ,i realy realy like this engine ,i thought there was a ground wire on the switch box that i could conect the Lanyard switch to, interupting the ground sounds beter than interupting positive or it's just my idea ,(chris ,no we don't say earth , we say massa) , think i'm going to try the white wire, stil considering that the Lanyard switch can be used(pulled) by mistake (hapens more often while boating), costing me fryed parts and drifting around , so creating a short circuit is out of the question , is there a ground wire that shuts of the engine when interupted ?

 

[Scaaty]

Re: Conecting Lanyard switch to my merc 1500

Be nice if ya told us of the original intent...but thats water under the stern..Lanyard/kill/whatever has zip to do with a compression reading check

 

[talitje]

Re: Conecting Lanyard switch to my merc 1500

The original intent is to conect the lanyard killswitch just like it should be done by the Dealer , sounds dificult ,(even for a electric guru) if you don't know how to do it properly (stil being able to crank engine without engine starting up), sounds easy , the killswitch is supose to , just shut down your engine and not disable youre engine , or fry parts ,or creating a short circuit ,the compresion test is a example so the readers know how i would like my switch conected (the right way), i remeber having a Yamaha 55 h.p (1984) and if i forgot to conect the killswitch, i could crank without the engine starting up and when in gear it would not even crank , i would like my switch conected just the same , the not cranking in gear is al ready a fact , thanks to the mercontrol , and now to conect the killswitch just like they would conect it in a boatshop , just want it done tright , thanks for the reply's

 

[Scaaty]

Re: Conecting Lanyard switch to my merc 1500

"the killswitch is supose to , just shut down your engine and not disable youre engine , or fry parts ,or creating a short circuit ,the compresion test is a example so the readers know how i would like my switch conected (the right way), i..:"

Do you hear the thudding sound?..its my head banging against a solid wall for even getting involved with this..do you have even a clue which end of a screwdriver is the usable end..?..Have fun..hope ya don't toast a good old motor..