YaSureUbetcha!
Recruit
- Joined
- Mar 29, 2013
- Messages
- 3
Hello there,
I recently bought a lemo....uh excuse me...Glasply with a '73 Mercruiser 120 in it. Serial # 36455XX (can't make out the last two digits). Previous owner had 'upgraded' to a SI10 Delco one-wire alternator. Output post (batt) shows 35V. Batteries measured at 12.6 (i.e: not charging). Auto parts store bench tested alternator: 14.6V output. I also measured output voltage with with a wire direct to the positive battery post: 14.6V at alternator and battery. So I think something may be wrong with the wiring/connections, and I haven't a clue what I am doing, but I watched some youtube videos about DVMs, rushed out to buy one and have been in a measuring haze every since...
Pouring over the a wiring diagram, I am trying to hook this thing up as per the diagram, and I did actually get the voltage to be 14.6V at the alternator, and 13.7V at the batteries, still a problem, but at least charging, and the ammeter gauge was working now too...however when I turned of the key, damn thing kept running, then stopped because the 40A circuit breaker tripped. I'm so glad I put a new one in as the two red wires were simply screwed together.
A lot of the wires behind the steering panel have been replaced, which is great accept that the colors are often different from the schematics. Previous owner also upgraded to the Pertronix Ignitor system, so the wiring to the coil is also quite different from the schematics.
I have continuity...no...I think have continuity from the output post of the alternator to the appropriate pin in the harness connector, and from the harness connector pin to the panel. Two marine batts, both work, one is new.
I appreciate any help I can get to sort this mess out. Would be nice to actually start using this machine.
Cheers
I recently bought a lemo....uh excuse me...Glasply with a '73 Mercruiser 120 in it. Serial # 36455XX (can't make out the last two digits). Previous owner had 'upgraded' to a SI10 Delco one-wire alternator. Output post (batt) shows 35V. Batteries measured at 12.6 (i.e: not charging). Auto parts store bench tested alternator: 14.6V output. I also measured output voltage with with a wire direct to the positive battery post: 14.6V at alternator and battery. So I think something may be wrong with the wiring/connections, and I haven't a clue what I am doing, but I watched some youtube videos about DVMs, rushed out to buy one and have been in a measuring haze every since...
Pouring over the a wiring diagram, I am trying to hook this thing up as per the diagram, and I did actually get the voltage to be 14.6V at the alternator, and 13.7V at the batteries, still a problem, but at least charging, and the ammeter gauge was working now too...however when I turned of the key, damn thing kept running, then stopped because the 40A circuit breaker tripped. I'm so glad I put a new one in as the two red wires were simply screwed together.
A lot of the wires behind the steering panel have been replaced, which is great accept that the colors are often different from the schematics. Previous owner also upgraded to the Pertronix Ignitor system, so the wiring to the coil is also quite different from the schematics.
I have continuity...no...I think have continuity from the output post of the alternator to the appropriate pin in the harness connector, and from the harness connector pin to the panel. Two marine batts, both work, one is new.
I appreciate any help I can get to sort this mess out. Would be nice to actually start using this machine.
Cheers
