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Mountain Heritage

Electric fuel pump, wiring help, KT-17

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So adding a Facet fuel pump to my KT-17 in my 782.  Had enough of the standard old manual fuel pump.  But need some help hooking it up! 

Instructions say I need a relay between the key switch and 3 amp fuse before the fuel pump.  Never used a relay before so don't know how to hook it up right?

Have a five pin key switch with the following letters on the pins - A, S, G, M, and last one is blank.

Have a 5 pin relay with following numbers on the pins - 30, 85, 86, 87, and 87a.  Has black, red, yellow, white, blue wires.  Black one is smaller gauge than the rest if it matters?

Got the 3 amp fuse and holder the instructions call for as well. 

So mount the pump on 45' angle like the instructions suggest, black wire grounds pump and then red runs to fuse holder, then fuse to which wire on the relay?

 

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Pin 87A not used

Otherwise,  wire like this...

20200622_201217.jpg

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Note.....on a 782 with 16ga wire or heavier,  the relay really isn't even necessary,  you could just run the inline fuse off the positive side of the coil.

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7 hours ago, Mr. Plow said:

Pin 87A not used

Otherwise,  wire like this...

20200622_201217.jpg

Thanks Steve!  One question, there doesn't need to be a fuse between the relay and the fuel pump?

Hoping this will solve my starting issues.

Again, appreciate the help.

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Oh, another thing, coffee is just starting to kick in.  The positive for battery - hook directly to battery post, or run it off one of the posts on the solenoid?

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Solenoid (constant hot) or battery ok.

See revised wiring diagram 

20200623_075126.jpg

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Do I have to splice the hot wire to coil or can I just put the connector right on positive post of coil with other hot wire?

20200623_095100.jpg

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Just put a eye right on it, shouldn't hurt anything. 

 

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Almost time to try it out, fingers crossed 🤞

 

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20200623_120312.jpg

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Almost time to try it out, fingers crossed 🤞

🤨🤨

Well, turn ignition on and it pumps fuel!  Problem is it seems to leak out at the bottom of the breather elbow onto the top of engine.  Shut gas off and tried to start - fired right up!  Obviously filled the bowl with gas, it ran for a few minutes with gas off.  

Have to wait for it to cool down so can take carb off and see if it needs tightening?  Hope the pump isn't too powerful and it over filling carb all the time!?!?

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What model fuel pump did you get?

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6 hours ago, nate said:

What model fuel pump did you get?

I ordered part number BKP6101052 from NAPA.  Says it is 1.5 - 4.0 PSI.  Facet number is 40104.

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