440fish
Well-Known Member
So i have what id call a "marginal" electrical system on my 69 SB for some time. Has the typical flickering of lights etc when everything is turned on (headlights, turn signals, brake lights.) When i sit at a traffic light at idle this is really exasperated. Was able to live with it but once i upgraded to a MSD ignition i've found that the MSD really gets upset when the voltage drops... even to the point where it starts skipping. Over time it it seems to get worse and i yanked a few plugs to find they are getting fouled due to what i believe is lack of power to the msd at idle. (no it isnt a jetting or timing issue, Tuned car with a A/F meter)
Bench Tested my 1 wire round back alternator and it is a 40 amp model. Found a 70 amp 2 wire square back and had it completely rebuilt.
My questions are this after doing research:
1. Should this upgrade solve my weak power at idle?
2. will the stock harness handle the upgrade? I thought it would be fine but the auto electric guy said you need to be sure that there wasn't an upgraded harness for higher amp applications (hes not a Mopar guy)
3. Should i bypass the amp meter at this point.
thanks!
Bench Tested my 1 wire round back alternator and it is a 40 amp model. Found a 70 amp 2 wire square back and had it completely rebuilt.
My questions are this after doing research:
1. Should this upgrade solve my weak power at idle?
2. will the stock harness handle the upgrade? I thought it would be fine but the auto electric guy said you need to be sure that there wasn't an upgraded harness for higher amp applications (hes not a Mopar guy)
3. Should i bypass the amp meter at this point.
thanks!