Not sure if I am missing a voltage regulator, I have tried looking for the location of one online but where is it meant to be on a 15.5hp intek?
It doesn't have one, as was determined earlier in this thread, from the Briggs Repair Manual:
Current for the DC side of the alternator is
unregulated and is rated at 3 Amps. The output
rises from 2 Amps @ 2400 RPM to 3 Amps @
3600 RPM.
Greenfield have an added charging harness which is brand new on mine, numbers 5 and 6 are the harness and charging diode. Would this be what is making the output so low?
The 'charging diode' in the harness is only there for the hour meter; i.e. so that the meter will only run while the engine is running, and generating power.
I am concerned the lights will draw more current than the alternator can put back in!!
Yep, with such a low DC output, it is easy for lights to exceed that, and draw the battery down.
Hence grumpy's [and my] attraction to the much more efficient LED lights, which also draw much less current [<0.3A, or 3.6W, each].
If your lights use standard automotive globes, it is quite easy to get 'LED globe' plugin replacements, and this would be a good way to go.
Just as an example, this mob in the US have a good variety, including some that are OK with 12V AC;
https://www.superbrightleds.com/cat/tail-brake-turn/
