ktmrfs wrote:
is there a way to enable a high idle on the MH? something on the order of 1200 rpm or so. If so, you may be able to get more out of the alternator, higher voltage and more current. Alternators are rated for max output at a fairly high rpm, well above engine idle.
1200 rpm should sufficient for close to maximum output.
Buy a clamp style meter
like this one Clamp it on the output wire of the alternator, then turn on all the lights, wipers, etc. and see what it reads. Check the voltage at engine battery. Check the voltage at the house battery. I guarantee you the voltage at the house battery is NOT higher than the engine battery and that is probably INADEQUATE to fully recharge the hose battery, even after hours of driving.
