My just bought 89 GL1500 Motor Trike just quit. After being hauled off the expressway, it started back up. Few weeks later, on the interstate, it died. This time no go.Took it to mechanic. He tore off the rear fenders and found a 3rd relay which he replaced. He's not a Honda shop. Bike ran great for a while, but now it's stopping when in OD around 70mph. Also reverse no longer works. It starts to go, moves a 3 inches then stops. You can keep pushing the starter button and move 3 inches at a time. Didn't do this before mechanic worked on electrical. Talked to him and I'm taking the bike back Monday for the reverse. Now, also to look at the stopping in OD. Other issue that existed before I bought it but is worse since mechanic is that sometimes when you turn on the key, the relay to the headlights/dashboard doesn't want to come on. Turn the key on and off a few times and it works. Sounds like a loose wire somewhere. ANY HELP?? Just started looking for a wiring diagram. Troubleshooting manual would be nice too. Complete service manual too. I can't afford to take the thing to the mechanic every month. Thanks.