BPEisenhower 565 #1 Posted Saturday at 07:25 PM Hello Horse fans. It's a good day but bad problem.... Got a 520 H and can't be happier but, it's got issues (why it was cheap). Wiring hacked, constantly draining a new battery after a day. Gauges not working but the safety lights on the dash do illuminate. Can hear a relay click but that's all. Got all hub caps, snow thrower and new belts, pulleys, every book to tear it down including hydraulics. Bill of sale, warranty paperwork. Everything. Love the looks with the 60 inch deck. Is there a wiring harness available or is it something I get to make on my own? I was told for the last two years it's been started with a jump pack and glad it doesn't have electric PTO! Don't see a stater solenoid so jumping terminal won't work so there's that. Overall, I'm glad I grabbed it but wiring is not my stronghold. LoL. Any help is appreciated! Will get books out and throw up more pictures 3 Share this post Link to post Share on other sites
pfrederi 20,939 #2 Posted Saturday at 11:13 PM (edited) Well you may not be an electrical expert now....and maybe a 520 is not the best place to start ...but you will I guess become an electrical expert. Edited Saturday at 11:14 PM by pfrederi 3 Share this post Link to post Share on other sites
lynnmor 8,939 #3 Posted yesterday at 01:28 AM The 9-pin connector and the fuse block has been attacked by the usual klutz. I doubt that you need an entire wiring harness, just clean up the mess caused by the klutz. I doubt that you can find a harness anywhere. The solenoid is part of the starter. Download the Demystification Guide, and the Onan engine manual. As you go along, ask questions here. 1 1 Share this post Link to post Share on other sites
Handy Don 17,062 #4 Posted 6 hours ago 19 hours ago, lynnmor said: I doubt that you can find a harness anywhere. Interestingly, I had and sold a nearly complete 520-H harness and dash last summer! I agree with @lynnmor that this is an approachable problem solvable step by step. Yes, the 520-H has a fair number of electrical elements, but by becoming friends with the demystification guide and getting some assists from members here, it’s likely you’ll succeed. 1 Share this post Link to post Share on other sites
kpinnc 18,777 #5 Posted 4 hours ago On 8/8/2026 at 3:25 PM, BPEisenhower said: Don't see a stater solenoid On an Onan the solenoid is mounted to the starter motor like an automotive application. 1 Share this post Link to post Share on other sites
