rhdsilvi85

ok so I got a rhd conversion the kid that did it before me messed up everything so I rewired the whole car so far except for lower engine harness.. so I thought my stock sr20 alt was bad so I did the cody ace quest upgrade got everything hooked up and it still charges the same as the old alt.. so I had a buddy take the sr alt to autozone and tested it and it passed (go figure).. so my questions are what do I need to look into for a bad ground? on the alt? on the body? when the car is idle the battery is showing 12.4v when with the new alt should be 14.25v so something isn't right should I just get a new harness? or what? stuck at stand still right now..

thanks