Tachometer question

L

ledzeppelin135

Petty Officer 2nd Class
Joined
Jul 27, 2011
Messages
129
I just bought a set of gauges off ebay and am wondering how to hook up the tachometer to my 1983 Mercury 50hp outboard. I believe it is a 12 pole but please correct me if I am wrong. The back of the Tach has a +, - and p tabs for wires and then has a little flathead screwdriver dial with 4,6,8 settings on it. I am not sure of the brand of this gauge but am wondering how I would make it work with my motor. Please let me know. Thank you!
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,534
Re: Tachometer question

Is that tach made for an automobile (4, 6. 8 cylinders)? Normally an outboard tach will have three connections and a selector switch. The three connections are +12VDC, Ground and Sender.

12Pole is normal setting for Merc.
 
L

ledzeppelin135

Petty Officer 2nd Class
Joined
Jul 27, 2011
Messages
129
Re: Tachometer question

it is definately a marine tach as it has a blue housing and all those connections
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,534
Re: Tachometer question

OK, Try the 6 setting and see if it appears to be correct.
 
You must log in or register to reply here.
Top