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| My recommendation at this point is to do the following.
Get a good length of wire that you can connect between the negative post on the battery and to the black negative lead on the voltmeter to allow measurement around the machine and inside the cab. Ten or so feet of 20 gauge wire or something else you have laying around will suffice... all you need is a reliable working ground back to the negative battery post. You can clamp the wire to your voltmeter lead or just have your girlfriend hold it together, it doesn't really matter how you want to pull it off.
Then turn the key to the on position and check the voltage at the batteries to give a good voltage reference point. You will most likely see something of 12.6 volts on a set of good healthy fully charged batteries. Now, the first place I would check would be the solenoids behind the seat. You should have something of 12.3ish on both terminals on each solenoid. If you have voltage on only one big terminal, then that will be the source of this problem... which I strongly suspect at this point.
Note, when you are testing a connection, probe all points around that connection. Take the lead on the solenoid behind the seat for instance. Test it by touching the stud itself on the solenoid. If there is no voltage there, then touch the cable lead. If there is still no voltage there, then sometimes you can move slightly further back by touching the exposed wire(s) that the lead clamps on to. If the voltage instantly rises between any of these points, then you have isolated the problem to that very spot.
Lastly, if you do not see voltage on both terminals of a solenoid, do not throw a new solenoid in there. It is very possible and likely that the solenoid itself is still good and the problem lies in the energizing circuit...aka key switch, bad ground connection, etc. You can also do an author search with my name and look at some past posts on this very subject to help give some more insight on what we are doing.
Mav
Edited by Mav 12/10/2019 08:02
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Magnum 315 electrical problem, no power to cab
