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ContinuousWave: Small Boat Electrical
OMC Tach Harness Plug
|Author||Topic: OMC Tach Harness Plug|
posted 09-01-2010 03:36 PM ET (US)
I have a 1985 OMC control box on my Evinrude 50, and I was thinking of adding a tach. Rather than spending $40 on a factory harness, I figured I could easily assemble one. I have 3-wire boat cable and terminals. Does anyone have the specs (size/make/etc) for an appropriate plug that fits into the slot on the control? Or at least a close picture of one? Thanks!
posted 09-02-2010 12:43 AM ET (US)
See your dealer. It is an Amphenol 3 pin connector and the 3 individual pins. Parts should be reasonable
posted 09-10-2010 09:02 PM ET (US)
I am in the same boat... I have a 1993 40hp Johnson and a loose OMC tach. I went to the dealer today to inquiry about a harness and they have a full gauge harness for $150(that they did not know if it would even work) and a tach only teleflex harness for $50. I am looking for a less expensive solution to hook up my OMC tach.
posted 09-10-2010 09:08 PM ET (US)
Visit the fantastic website hosted by Bombardier:
and get the part numbers for the connector body and pins. Order the part for the connector and wire it up yourself. Should cost about $8.
posted 09-13-2010 05:37 PM ET (US)
Thanks Jim - For my motor, it looks like it is part #0511465 CONNECTOR, 3-pin receptacle
posted 09-16-2010 08:50 PM ET (US)
Thanks again Jim! I was able to use your wonderful link to find part numbers to take to my dealer.
I tried to get the same 3-pin CONNECTOR (Part # 0511465) as MidcoastMike and 3 of the Terminal Pins (Part# 0511469). However my dealer did not have enough of the pins. But they did have a full cable assembly (part# 0174130). It lists for $38, but they had two collecting dust and sold me one for only $23. I tested it out tonight, Plug and play, super easy! The extra cost was worth it for me not to have to figure which wires are which in the control box and build my own cable assembly.
Here is a link to an illustration i found (part numbers) for anyone with a similar issue:
I would like to connect the light inside the tach for those very rare night excursions. I was wondering if I could just and a jumper wire from the 12v terminal to the terminal for the light inside the tach. See my photo here:
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