Re: how to install a amp gauge
It really helps to have a schematic for doing this.<br /><br />Here is what you want to accomplish.<br />1) The starter motor does NOT run through the meter
<br />2) Everything else does.<br /><br />I have a 1970 85hp Johnson. Here is how I did it:<br /><br />I ran a 10 Guage wire from the battery to the ammeter.<br />Then another 10 guage wire from the other terminal of the ammeter<br />to the fuse panel.<br /><br />I ran a 12 guage wire from the fuse panel to the same terminal as<br />the +12V wire from the motor wiring harness. <br /><br />Now the tricky part. Inside the motor compartment the 9 amp alternator went<br />through the rectifier to the +12V battery lug on the starter solinoid. The Wiring<br />harness +12V went from there to the ignition switch via a 12 Guage wire.<br />I disconnected the alternator and the wiring harness +12V wire from the starter<br />solinoid and tapped it off. At this point the alternator current rather than going <br />directly to the battery via the big fat wire, goes through the +12v wiring harness <br />wire to the switch. The switch lug is jumpered over to the fuse panel (as stated <br />before). For a 9 amp alternator the 12guage wire in the wiring harness is sufficent, <br />if the motor had a larger capacity alternator, I would have ran another 10 guage <br />wire in it's place and not used the internal wiring harness. <br /><br />Anyway thats it, hope this convoluted explanation works for you.<br /><br />Mike
