To Tach or not to Tach?

[Ib1pirate]

OK, heres my delema, I'm considering hooking up my Tach that is a donor from my 17'er it is an aqua tach with 1 grey wire and 1 black wire, I have a 1964 merc 650 65hp Serial#1673055.<br />previous owner has bypassed ingnition with push pull on/off switch, and a push button start. ok my question is this where in the heck does the tach hook up on the engine i see no visable coil on engine, do i hook up at the rectifier? and if so they also have either replaced that to or jury rigged it, there are 2 yellow wires coming off it form the stator the red is hacked off at the rectifier. clymer has been of no help at this point. any and all your help is appercieated<br /><br />Thanks..

 

[Ib1pirate]

Re: To Tach or not to Tach?

does anyone know? Please.............

 

[mellowyellow]

Re: To Tach or not to Tach?

welcome aboard,<br />old merControl should have a 3 prong plug on<br />front side.<br />good luck,<br />M.Y.

 

[Ib1pirate]

Re: To Tach or not to Tach?

ok, so your saying hook it up at the harness side or the engine side of the 3 prong probably doesn't matter?, and if so which wires? <br />thanx mellowyellow...<br /><br /><br />Electricity is all Fun and Games until somebody gets ZAPPED!!

 

[Stumpys]

Re: To Tach or not to Tach?

Ib, as mellowyellow said, there on your merControl is a three prong connector. There is a gray wire, purple, and a black. <br />Well, at least mine did! Anyway, the gray is for the tach sense, the purple is for the ignition on the tach, and the black is ground. All those wires go to the tach.

 

[mellowyellow]

Re: To Tach or not to Tach?

MerControl is the throttle/shifter handle.<br />look on very front/bottom and you should see<br />a place where it plugs in.

 

[Ib1pirate]

Re: To Tach or not to Tach?

ok, I have no connector in front of the control, there are 3 cables coming out of the back side of control which are 1 for forward, 1 for reverse, and 1 for electrical, control has choke button on top and key switch which doesn't work, but like I said the Ignition has been bypassed with a push pull on/off switch, and a push button start, should I hook up to those?....<br /><br />Thanks for the replys!...

 

[mellowyellow]

Re: To Tach or not to Tach?

my former '70 1150 had same color code as stumpy<br />described above, but not sure about '64?<br />do a search here under "MerControl"...there should<br />be a link to a schematic I once needed. if lucky,<br />the '64 uses same color codes.<br />good luck,<br />M.Y.

 

[Jcrain]

Re: To Tach or not to Tach?

On a 61 50 horse merc hook sense wire from tack to either yellow wire at the rectifier. Black wire goes to ground.

 

[rexeisenr]

Re: To Tach or not to Tach?

I have a similar question. Does this also work with a 1984 50hp mercury, the front plug on the remote control?

 

[Jcrain]

Re: To Tach or not to Tach?

Not sure.....the wires to my remote had deterioated to the point where I couldn't tell what color went where. I had to completly rewire the whole engine