12a electronic timing problem
 

on my 12a im trying to time it when i put the timing light on t1 the timing is all good but when i put the timing light on t2 the timing mark is 180 degrees out whys this how do i fix

It is supposed to be like that. Timing is set from L1 and T1. L2/T2 are relative to those. As long as your plug wires are going to the correct spots, L2/T2 will be correct if L1/T1 are correct.