Speedo & Radio/Clock down

[DBF]

While up in NY state towing the fiver around, I had to stop for a slow-moving train. I turned off the engine while waiting. When I turned it back on, I had no radio/clock and the speedometer/odometer wasn't doing anything.



For the rest of the trip, the speedometer/odometer would work most days, but do nothing on the other days. The radio/clock never did come back on.



Now that we're back home, I can tear into this, but I'm a little confused.



Is there any place common to both items (fuses are good).



Any suggestions appreciated.



DBF

 

[CGauthier]

Does the radio work at all or is it just the display that's out? I'm not much help to you here, but I don't think they're tied in together on this. If they were when the speedo would come on the radio/clock would too. When the speedo does work is it jumpy or erratic at all? The reason I ask is mine was working intermittently and I had a hunch that it was electrical because when it did work it worked perfectly... I changed the vss and all was good after that. For gettin on the speedo check here



That's a good start and maybe someday I'll be not busy enough to finish my "how to thread"



As far as the radio is concerned the first thing i would do is check if there's power getting up to the thing (if you got an ohmeter they can test voltage too), so you can determine whether it's the radio or the rest of the circuit. I haven't done it but I'd just hold the negative probe to ground and just start touching every other wire because you can't hurt anything like that. Also usually black is the negative/ground, so I'd want to check and make sure that part of the circuit isn't dead also. If you get readings from touching the frame (non painted metal of course ) and not from the ground wire there would be your first clue. Anyways I hope I helped at least a little bit and keep us up to date whatever you find



Carl G