Failure to stop at a traffic light is a 2 point offense in New Jersey. In Pennsylvania failure to stop for a red light is a 3 point violation. Pennsylvania and New Jersey are both members of the Driver License Compact (DLC) and Non-Resident Violator Compact.

The DLC calls for member states to notify a motorist's home state of out of state traffic violations. So NJ will report to PA your ticket for failing to stop at a red light. PennDOT though has decided that when they receive this information to not place it on your driving record or assess points to your license - if it is a minor offense, such as speeding or running a light.

So according to PennDot the points should not go onto your PA license. This does not mean that you can ignore the citation though. The Non-Resident Violator Compact allows member states to suspend the drivers license of those who get traffic tickets for moving violations in other states and fail to pay or properly take care of them.

To verify that PennDOT has not changed their stand on out of state tickets and points on your license you can contact them and confirm this information.

Comment Update: Yes, your insurance premiums will be affected by the violation even though it doesn't transfer on your state driving record. The only way it will affect your premiums is if the company does an extensive violation report.