Wheelhorse616 4 #1 Posted November 7, 2021 Hello, I recently rebuilt my 312-8, when I tried to start it. Nothing would start, no lights, nothing on test. But when I used a wrench on the solenoid. I would turn over, I am not sure if my ground wire is in the right spot as I forgot where it went from before but it is on for anyone that thinks I left it off. Any thoughts? Let me know. Thanks! Share this post Link to post Share on other sites
jtrosp1980 89 #2 Posted November 7, 2021 (edited) welcome you came to the right place these guys and gals are amazing on helping I think the ground should be marked with a g or minus sign should be a small bottom post Edited November 7, 2021 by jtrosp1980 added to it Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,137 #3 Posted November 7, 2021 What is the model number and serial number on the tractor? Many changes to the wiring on the 312-8. Share this post Link to post Share on other sites
Wheelhorse616 4 #4 Posted November 7, 2021 It’s a 1990 Wheelhorse 312-8 with the Koehler Magnum 12 hp engine. Just can’t figure out the wiring. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,137 #5 Posted November 7, 2021 1 Share this post Link to post Share on other sites
Wheelhorse616 4 #6 Posted November 7, 2021 Turns out I found out the problems but can’t solve them yet, no ground on the tail lights, no ground off the oil level relay and no ground of the engine. I don’t know what the wires look like and where they go for those three locations. So if anyone ones a 312-8 and could send a few picture of what I am talking about would help out a ton. Thanks! Share this post Link to post Share on other sites
Wheelhorse616 4 #7 Posted November 9, 2021 Any ideas or pictures? Share this post Link to post Share on other sites
Lee1977 6,873 #8 Posted November 10, 2021 Part of the problem is the 312 design. The dash panel where the switch and light switch are located only has two screws they are usually rusted and also the panel. Clean those areas and tighten those screws. The key switch also need a good clean ground in that panel,if not you won't get power to anything. I would also suggest running a ground wire from a engine mounting bolt to the battery ground connection up beside the battery. Share this post Link to post Share on other sites
953 nut 56,186 #9 Posted November 10, 2021 On 11/6/2021 at 8:27 PM, Wheelhorse616 said: I am not sure if my ground wire is in the right spot as I forgot where it went from before If this is your solenoid ground this picture may help. Share this post Link to post Share on other sites
Wheelhorse616 4 #10 Posted November 15, 2021 That is the ground I think I have screwed up. Does anyone have a 312 that could snap a picture of where the solenoid ground connects and goes to. Looking around I think it connects to the negative terminal and then is grounded but not sure. Thanks Share this post Link to post Share on other sites
953 nut 56,186 #11 Posted November 15, 2021 A short piece of wire from one of the small terminals to one of the mounting bolts will be fine. Share this post Link to post Share on other sites
Wheelhorse616 4 #12 Posted November 16, 2021 I guessing from the negative terminal to the a bolt holding the engine on. Share this post Link to post Share on other sites
953 nut 56,186 #13 Posted November 21, 2021 Just run the ground wire from one of the small terminals on your solenoid to one of the mounting bolts. Share this post Link to post Share on other sites
