I have a simplicity dlx25, someone hacked up the pto harness and cut out the diode and connector. It is straight to ground and 12v from the switch. I have 1 amp, 5 amp and some zener diodes (I dable in electronics) are a pto clutch diode wired like a car ac diode. Just in parallel between 12v & ground?

I recommend having it checked out by qualified Simplicity or Riccar service center. It may save money in the long run.

Remove the handle screw to remove the handle assembly from the vacuum. Remove the screws holding both sides of handle together to separate handle to get access to switch

Get a new switch from your dealer

My first guess is that you have a damaged cord, or perhaps a dirty plug, or possibly even a bad outlet. There is a way to tell which, if any of those problems are the cause. Will you be doing the work, or someone else?

It should loop around the roller, Rachelle, then twist one-quarter turn to hook over the motor shaft (the steel one that points straight down). Now, it CAN be hooked over the motor shaft in either of two directions, depending upon which direction you twist it - one way will make the roller run backwards and probably pop the belt back off the shaft. The other way is the correct way - if the roller rotates the correct direction when you bump the power switch, then it's on correctly.

Tanks may be empty or not properly seated.
-Fill up the bladder with hot water and the solution tank with proper cleaning liquid.
-Remove and reseat both tanks

Pump may dry, needed to prime.
-Turn "off" power wait for about minute turn "on" power and depress spray trigger.

Check and clean filter on the deck (under the clean water tank, a red slotted plastic screw)

If nothing works you have to open the deck cover and go into details: check the pump, its a 12V DC motor, the solenoid, its a valve which operates with 120V, the hoses for broken or pinched part, the diode bridge (creates about 12V DC for the pump if the vacuum motor is turned "on" and the secret fuse (3,15A under the heat-shrink series to the diode bridge, if this one goes, no power to the pump!)

Since the problem was with the plug on the electric cord, I replaced the plug, I cut the old plug, peel off the plastic cover on the cord, they were two wires, black & white, I purchased a new plug in a Home center, attach the wires to the new plug and it works just beautiful now, it was a two prong plug, which made it easier to fix.

no just on /off switch and direct power to vac motor sounds like its burned up from bag being overfilled , now you have to get to the vac motor test it with switch on to see if its getting power if so then motor is burnt.use an ohms meter for power test.

Fritz , thanks please confirm... there are likely more than 2 leads from the motor??
I have not seen or worked on the Tristar CXL as it is very new.You will have a high low function but:

Should the power head function at both speeds or only hi speed

How many connectors pulled apart ?

Are the leads fastened onto the motor or are there push on male terminals on a terminal bar beside the motor with leads running off a shroud.
How many leads are on the switch itself....
Either way the wiring pattern will be the same,for all components it will just be a matter of which half of the motor harness connects in which terminal, if you wire it in reverse your speed switch should just function backward. The question is, is there a simple rocker switch for hi low or is there a circuit board type with a speed control on a mini board. If your power head functions at both speeds it will connect from the cord or rewind, prior to the speed switch. If it should only run on hi speed it will be tied into the hi speed half of the two speed switch.
So leaving your green ground out your pattern would be: black to 1 side of rewind to main switch to motor and head together and then remaining back to opposite side of rewind to cord.
Please confirm a bit more info as posted...

Could be a bad cord or a switch problem. Could also be a problem with the motor. Will have to checked to find the right problem.