[Richard]

At the non rally, Ron Skeen asked me to look at the headlights on his coach. The issue was that they did not provide enough light for night driving. We found with the engine running that the voltage at the left light was 11.4 and the voltage at the right light was 12.4. Although Newell did use relays for the headlights, the extended run of wire from the passenger kick panel to the lights coupled with inadequate wire gauge resulted in the low voltage.  Julius @"Pardue101"  helped me install relays at the headlights to see if we could improve the voltage. We used 10 guage wiring for both the hot and ground sides. We pulled the left side power from the large 12V terminal in the bay below the driver, and we pulled power from the kick panel hot stud for the right side. We ran new grounds directly to ground studs in the area close to the lights. The voltage increase was very good. We measured 13.8 at the lights with the engine running. So if the graph is anywhere close to accurate, the output of the light was around 620 lumens at 11.4 volts and 1200 at 13.8 volts. On paper we almost doubled the output of the light with the installation of the relays. I am going to leave it to @"ron skeen" to comment on his real world experience of driving at night. 

I know this subject has been posted in the past, but we do have a number of new members, AND most importantly the newer Newells already use headlight relays so it would be easy to assume that adding more relays would not be a worthwhile effort.