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Author Topic:   Simultaneous SmartCraft And Analogue Gauges: Wiring Harness
lurkynot posted 04-23-2007 07:42 PM ET (US)   Profile for lurkynot   Send Email to lurkynot  
When I purchased my [2001] Dauntless 18 it had a 135-HP Mercury OptiMax motor and analog gauges. As part of the deal, my dealer added SmartCraft gauges since the motor had the functionality. Can I re-mount the original gauges along side the SmartCraft gauges? Is the harness a straight swap from analog to digital? Are there addition connectors in the harness for each setup? I would rather not splice if there were additional connectors, assuming a splice would even be applicable.
jimh posted 04-23-2007 08:22 PM ET (US)     Profile for jimh  Send Email to jimh     
What analogue gauges are you planning to use?
lurkynot posted 04-23-2007 09:30 PM ET (US)     Profile for lurkynot  Send Email to lurkynot     
The original ones that were shipped from Whaler to Colony Marine. As part of my sale the dealer removed the factory equipped analog gauges and installed the Smart Craft Gauge Pack and gave me the original panel with the analog gauges.
jimh posted 04-24-2007 12:08 AM ET (US)     Profile for jimh  Send Email to jimh     
Let's try this again: what analogue gauges are you trying to use?

I don't want to know who sold them to you, I want to know what they measure.

lurkynot posted 04-24-2007 08:04 AM ET (US)     Profile for lurkynot  Send Email to lurkynot     
Mercurys' original gauges. As I have said the boat came with OEM (analog) gauges. The dealer removed those and installed the Smart Craft Gauges.
rtk posted 04-24-2007 08:18 AM ET (US)     Profile for rtk  Send Email to rtk     
I have both conventional gauges and the Smartcraft SC1000 hooked up on my boat, 2003 Mercury 250EFI.

The main engine harness is the same harness that was rigged for the original 1997 Mercury 225, no Smartcraft.

You need to look at the main wiring harness. Look at the back of the key switch, and follow the harness down a foot or so. Look for a black rubber electrical connector, 3 pin. There should be a purple, tan and black wire going to it (pretty sure). That is the connection for the conventional gauges. You can buy a plug in pig tail from your Mercury dealer to wire the gauges from the harness.

On my boat there is a separate harness from the engine to the Smartcraft SC1000, it is not part of the main engine wiring harness.


lurkynot posted 04-24-2007 12:18 PM ET (US)     Profile for lurkynot  Send Email to lurkynot     
thanks rtk. I am going to follow up on that. Stay tuned I may need some more input if you don't mind. I like the look of analog but need the functionality of the troll mode. Also some of the additional data the Smart Craft Gauges provide are nice to have at your finger tips.
rtk posted 04-24-2007 12:56 PM ET (US)     Profile for rtk  Send Email to rtk     
I should be a bit more specific. The connector off the main harness has 12 volt positive & negative, and the tach sender feed. It does not have other sender feeds or connections.

If you are not going to install the conventional tach, you can use the black and purple (12 volt) feeds to power the gauges. Just tape up the tach sender wire good so it does not make contact with anything.

Fuel gauge will require a connection to the mechanical sender on the tank, in addition to a 12 volt source.

Other gauges may require a signal from a remote sender to display the data- I'm not familiar with the location of those wires on the harness. I do have a Mercury manual at home, I could certainly look at the harness diagram for the wire colors. Just need to know which gauges you will be installing- trim, temp, water pressure, etc.


jimh posted 04-24-2007 07:46 PM ET (US)     Profile for jimh  Send Email to jimh     
I give up. Let us know how it works out.

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