Will the brake and clutch cylinder on a 2007 C 90 Boulevard 1500 work on a 2006 Boulevard see 90

Question edited for clarity.
Question moved to model category.

The problem with a Trike is that the wiring will be custom. For the brake light, check the switch with a multimeter for continuity. For the lights look for a break in the wiring. There may also be a relay involved in the running lights.

https://www.google.com/search?q=2006+suzuki+boulevard+c50+service+manual+pdf

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Bad valve in the master

First off, clutch hydraulics use ONLY dot 3/4 brake fluid, if you used any kind of petroleum product you have ruined the clutch master cylinder and clutch slave/actuator(GM's term)cylinder. The level is on the side of the reservoir. If you had to add fluid, you have a leak in the system, probably the slave cylinder first. A master cylinder leak would have fluid on the inside of the firewall, where the master cylinder is mounted(leaking at the back). You bleed clutch hydraulics as you would with brakes.

Much like bleeding brakes. There's a bleed screw on the cylinder. Have a helper push the clutch pedal down while you release air form the bleeder screw. Watch the fluid level in the clutch master cylinder. You can get 2 good pushes on the clutch pedal before adding more fluid.

The brakes and clutch share the brake master cylinder reservoir,and a line from clutch master cylinder goes to the brake reservoir and it takes brake fluid,dot 3 type.

Clutch bleeding on hydraulic slave cylinders are done in the exact same method as regular hydraulic brakes. If the slave cylinder has a separate reservoir, make sure it is above "MINIMUM" at all times. If it does not have a separate reservoir, then it works together with the master cylinder for the brakes, make sure that one is above minimum too. Pump the clutch pedal a couple of times (note you will rarely feel any resistance in the pedal), hold the pedal down, and have someone open the bleeder valve on the slave cylinder. Close it when no more fluid comes out with pressure, then rinse and repeat until the clutch pedal feels ok.

check for front brake calipers dragging, if the are replace calipers and front brake hoses, if calipers ok replace master cylinder, This is how to check calipers, jack up front of truck have some one apply brakes and release as soon as they release the brake peddle the wheels should spin freely if not brake the brake line lose at master cylinder if wheels spin free with line loose replace master cylinder, if not replace calipers and hoses.....HOPE THIS HELPS

if your oil is too thick , your clutch will sleep and go away .
if the clutch is old , you obviously will have the same problem .
please explain your problem when you ride

If there's only one reservoir, then yes, they share the fluid and reservoir (my Audi is the same way).