Wayne_H
Gold Member
- Joined
- Dec 16, 2004
- Messages
- 380
- Location
- Davidsonville, Maryland
- Tractor
- John Deere 4400, '48 B and 318
OK, like a lot of folks with 318痴 I壇 like brighter headlights. Several of the threads on this forum suggested changing the stock 1156 bulbs to either 50 watt 795 or 35 watt 796 bulbs. A few folks were worried about the wire getting hot, so I decided to do an experiment or two.
First off, remember that the headlights are right above the horizontal mounted muffler? So even with the lights off it gets hot!
As somebody already pointed out, Deere used a high quality reflective paint to harness and focus more of the light energy. I polished my paint up as best I could, but in several spots there was no paint left to polish, so my options were spraying chrome paint or using HVAC shiny tape. The chrome paint I bought and tested on smooth metal was horrible, so the best I could do was use HVAC metal tape that was ok, but not as reflective as the OEM deere paint? Anyone know of a good chrome paint?
Now for the lights. I壇 suggest not using any combination of 795 bulbs? To get a fair test I left my engine off and connected a 13.8 volt 20 amp power supply. The 795 bulbs draw 3.90 amps each, and that makes sense since they are 50 watt bulbs. (13.8 volts x 3.90 amps = 53 watts or so) With three of these bulbs the wire did not get warm, but smoke started coming out of the sockets, so I decided to turn it off and get out my IR temperature probe. The outside of the socket showed 250 degrees F after less than five minutes, so I scrapped that idea since it also made the socket smoke
OK, next I tried the 35 watt 796 bulbs. As expected they drew 2.93 amps each. The highest temperature I saw on the outside of the socket was 194 degrees. Still hot, but I think that might be ok.
Last I checked the OEM 1156 bulbs. They drew 2.14 amos and got up to 170 degrees.
So, I decided to try three 35 watt 796 bulbs and cut some grass last night. Frankly, the lights still seem dim, but nothing melted or caught fire, so I guess I知 good to go.
As a last test I tried my 4400 lights. Those are great! I wish I could do the same thing on the 318. I don稚 want to drill into the deck pan or hood, but I may install some of these or similar lights onto the front right above the front bumper.
Any questions email me at wayne@flymha.com
Wayne
First off, remember that the headlights are right above the horizontal mounted muffler? So even with the lights off it gets hot!
As somebody already pointed out, Deere used a high quality reflective paint to harness and focus more of the light energy. I polished my paint up as best I could, but in several spots there was no paint left to polish, so my options were spraying chrome paint or using HVAC shiny tape. The chrome paint I bought and tested on smooth metal was horrible, so the best I could do was use HVAC metal tape that was ok, but not as reflective as the OEM deere paint? Anyone know of a good chrome paint?
Now for the lights. I壇 suggest not using any combination of 795 bulbs? To get a fair test I left my engine off and connected a 13.8 volt 20 amp power supply. The 795 bulbs draw 3.90 amps each, and that makes sense since they are 50 watt bulbs. (13.8 volts x 3.90 amps = 53 watts or so) With three of these bulbs the wire did not get warm, but smoke started coming out of the sockets, so I decided to turn it off and get out my IR temperature probe. The outside of the socket showed 250 degrees F after less than five minutes, so I scrapped that idea since it also made the socket smoke
OK, next I tried the 35 watt 796 bulbs. As expected they drew 2.93 amps each. The highest temperature I saw on the outside of the socket was 194 degrees. Still hot, but I think that might be ok.
Last I checked the OEM 1156 bulbs. They drew 2.14 amos and got up to 170 degrees.
So, I decided to try three 35 watt 796 bulbs and cut some grass last night. Frankly, the lights still seem dim, but nothing melted or caught fire, so I guess I知 good to go.
As a last test I tried my 4400 lights. Those are great! I wish I could do the same thing on the 318. I don稚 want to drill into the deck pan or hood, but I may install some of these or similar lights onto the front right above the front bumper.
Any questions email me at wayne@flymha.com
Wayne