1978 Mercontrol wiring pinout to dash for tach ETC

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Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,136
Re: 1978 Mercontrol wiring pinout to dash for tach ETC

Normally those MerControls have a 3 pin connector to power gauges, including the tachometer. Look for a round rubber plug on the front of the controller. It will have 3 slots that will accept male spade connectors. The horizontal one is for the tach signal.
 
boaterinsd

boaterinsd

Petty Officer 1st Class
Joined
Nov 19, 2010
Messages
276
Re: 1978 Mercontrol wiring pinout to dash for tach ETC

can a tach, any old tach work, on this?
 
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oldman570

Lieutenant Commander
Joined
Mar 25, 2011
Messages
1,615
Re: 1978 Mercontrol wiring pinout to dash for tach ETC

You will have to have a tach that is made to work on the motor. You can check the Faira or Telaflex web sites for info as to what will work. There is also cheap small tachs that can be bought that will work ,but the wires for them are rather short. For indash mounting it would be better to spend the extra $ for a tach that is made for your motor. The wiring harness for your contro to dash can be bought fairly resonable, and is often sold on Ebay.
Oldman570
 
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