While you're in there, do
Chris' Cleanup Process on it.
Correct, no Start Kit. Compressor Run Cap is on the Left, Fan Run Cap is on the right. There's a review somewhere showing how Dometic's kit does the best startup work. Chris says the OEM Coleman Start Kit is better than SUPCO SPP6E, but he recommends the "E" series over the series like SPP6. Coleman also had a Start Kit that was Capacitor plus PTCR as opposed to plus Relay. Only the Relay/Cap setup is shown on your yellow wiring diagram. Our diagram shows both that setup and the PTCR version, but both are optional.
Notice that even though there's a relay, a capacitor and a handful of wires, only two wires (shown dashed/broken since the feature's an option) end up on the Compressor Run Capacitor Terminals. Other than securing the device in place, all the "wiring" takes is to push a connector onto the two Run Cap terminals, and there is no polarity issue. That would hold for Coleman parts and the two SUPCO devices. I do not know how the Dometic kit connects.
If God's Your Co-Pilot Move Over, jd
2003 Jayco Escapade 31A on 2002 Ford E450 V10 4R100 218" WB