fixitforfree
Member
Totally rewired my 1976 2600 diesel today along with adding a new aftermarket gauge cluster. Wiring harness is a complete Sparex unit. Charging system is stock Motorola with external regulator and have a new fully charged 4DLT. Immediately after the rewire with key on but engine not started, the charge light was on. I started the engine, charge light still on. I let is run a few minutes, pulled off the wire at approx. 12 o'clock (field) and put it back on. Noticed a little spark when wire was connected and again when reconnected. After this, charge light went out as if the tractor was charging. Voltage was around 12.6 volts. Later, after the tractor ran 30 min or so, voltage was around 14.4 which is kind of where I would expect. Later, I noticed the charge light on again. I found the stud a little loose that the wire at about 9 or 10 o'clock connects to. I tighted it, charge light went out but voltage still only around 12.6. Is my alt charging or what is going on. Again, all the wiring is new except the POS and NEG battery cable. I just feel with my light out and charging at high 13's or low 14's everything is like it should be. But, even with the light out, 12.6 seems low and something is wrong. Please advise if you have any constructive comments or things I could try to prove this out I appreciate it.