21 RTL air compressor stopped working again - any ideas? Wiring diagram?

[Jim81]

Hey Y'all, I have a 2021 RTL, last month I had a Suspension Fault on the display. I pulled the onboard compressor and found that there was rust inside the armature housing. I cleaned this up with some emery cloth and contact cleaner; reassembled; and bench tested - works fine with 1 up or 2 up riding
This month, September, I got the same thing, Suspension fault on the display and a rough ride. So, I returned to the culprit (the air compressor) removed and disassembled it; no issue found; so I cleaned it up anyway just to be sure; bench tested it, and it works great. I reinstalled it, started the bike, waited 15 seconds, and the compressor was not working (but it works OK when connected straight to a battery!)
I swapped RELAY4 with another RELAY, and it's still not working. All the fuses are good. The 2 wires for this system, 1-black (ground) 1-Light Blue/w-black stripe or purple w/black stripe (power) - I think. (I'm color blind!)

I don't have a wiring diagram for this Spyder, if any of you do or know how I can get one, it would be a blessing. Thanks.

After reading over a lot of posts, this seems to be a known problem.

 

[NorwegianRT]

Just wondering, when you start your bike, do you release the park brake and put it in gear?
My compressor will not work until I do this.

 

[Jim81]

Just wondering, when you start your bike, do you release the park brake and put it in gear?
My compressor will not work until I do this.

Yeah, silly me - didn't do that prior to the operation. Once I remembered, it all worked! Thanks for the help.

 

[Woodaddict]

Has to be in gear. Then you will hear it IF the ride height is calibrated correctly in BUDS. It could also be a fuse blown, but you checked them. The compressor and something else are on same circuit, it might be the windshield up/down, or the horn, I can't remember.

 

[NorwegianRT]

Yeah, silly me - didn't do that prior to the operation. Once I remembered, it all worked! Thanks for the help.

Glad it worked out for ya.

 

[Gwolf]

My shop manual, The Repair and Maintenance Manual for my Spyder model and year has several pages of electrical diagrams almost in the back of the manual. Don't have any compressor diagrams, but my model does not come with a compressor, so I would not expect to. If the compressor is OEM, then the wiring diagram might be in the back of the Shop Manual.