If you are replacing your ride on mower engine with one of the new Briggs & Stratton Single Cylinder Ride on Mower Series Models, the wiring loom and connector might be slightly different to your old model, depending on what brand of ride on mower you have.
Your mower will have a starter motor engaging solenoid, so you must connect the wire that runs from this solenoid to the terminal on the starter motor. The terminal is located towards the base of the starter motor.
We have listed below, the wires found on the new Briggs & Stratton single cylinder engines and where they need to be connected to.
RED WIRE - This is your DC cable, it should be connected directly to positive power on your battery. This wire charges your battery.
BLACK WIRE - This is the engine kill switch, It needs to run to an ON/OFF switch and then run to earth. DO NOT CONNECT THIS WIRE TO POSITIVE POWER!
GREY WIRE - This needs to run to an on/off switch and then to positive power on your battery, this controls the carby solenoid for fuel.
ORANGE WIRE (IF FITTED) - Can be connected to headlights or any other accessories


19 comments
What is the part number for the Briggs and Stratton 6 pin block for the 17.5 hp engine
Great explanation thanks for sharing
I need the other half of the 6 pin connector block for a CXI 2700 Briggs and Stratton. If I can get a part number so I can purchase these it would make my life easier.
Just brought a new briggs and straton engine with the solenoid on the side my old engine didn’t have this I need help with the wiring and any pictures too please.
Can I swap a Briggs 724cc for a Kholer 7000 series ? On my bad boy mower?
I got a Troy Bilt Pony 17.5 500cc riding mower the engine blew on it model 31c7070603 type B2 I got a new engine model 31R9770054 typeG1 will the wiring match
I have a craftman t110 the original motor was a 17.5 500cc Briggs and Stratton it blowed up.bought a ex 17.5 Briggs and Stratton motor.can someone please help with the wiring diagram from new motor to the old wiring diagram.there is a couple of wires that I have no idea where they get hooked up to.confused
I have been checking all over the internet, trying to find answer to my wiring problem on my Briggs & Stratton 27 HP motor, and I I found it here Thanks.
Just wanted to thank you for this article. I was a bit skeptical at first, but I tried the connections mentioned above. They are correct and came in very handy for me. So, thank you again!
Searched high and low for some basic info re wiring, tried every briggs and Stratton outfit I could think of, alll bloody useless! And here it is in Oz land! Brilliant guys, thanks a bunch, you’ve got my tractor running!
I have been checking all over the internet, trying to find answer to my wiring problem on my Briggs & Stratton 25 HP motor, and I can’t I found it In Australia, your place is Great.
Thanks a lot.
Jim Favier
In the USA.
on the fuel solenoid there is a black wire, and there is a gray wire, How do you hook the 2 wire’s to the ignition. Need HELP
wiring harness and solenoid switch , I have a craftsman DYT 4000 WITH A BRIGGS AND STRATON INTEX TWIN 24 OHV, Wires came off the solenoid and not sure of the rewiring direction sure wish you can send me phots of the process, thanks a heap Perry
thank you for this article been serching the net 3 days to find this information
I have a craftsman LT1000 riding mower and I replaced the engine with a Briggs & Stratton EX 1750. The new engine has two connections. A single red wire and a dual connector with a black and a gray wire. How do I make the connection to the chassis wire harness that has an Orange, Red, Blue, and Black pins? Is there a conversion harness for this application?
What happens if it’s wired wrong