Help on my 440 Duster

you need to make sure you are getting 100% of a connection at the bulkhead . i bypassed mine as instructed in the MAD diagrams and ALL my problems went away. i would suggest you start right at the bulkhead connectors. you could have multiple problems, but the bulkhead modifications are easy and cheap insurance that everything is getting the voltage it needs.there are a bunch of diagrams in the thread links i gave you