User Improvements to New Holland L220 SSL & Attachments

Improvement #28 - Extension Cables on Diode Connectors
Recently I had problems with the interlocks on my machine (see this thread https://www.heavyequipmentforums.com/threads/nh-l220-interlocks-have-me-defeated.71899/).
In the course of finding the cause of the problem (mouse chewed wire!!), I learned that there are 4 diodes in-line in the wiring harness under the cab on the left side. According to others on HEF, they have been the source of many electrical problems, since they are prone to corrosion & otherwise failure. See this members experience here https://www.heavyequipmentforums.com/threads/new-holland-l223.72081/.

The connectors are in an almost impossible location to get to & work on. Even though they turned out NOT to be my problem, I decided to put extension cables on the connectors for future serviceability. Here is a photo of the 1st 3 diode sockets with the extension cables plugged in & the diodes plugged into the end of the extension cables, labeled, & wire-tied to an adjacent harness:

The 4th diode socket is about 8" to the rear of the above 3, & is even worse to get at. Here is a photo showing the socket with the extension cable plugged in & wire-tied to the loom.

Here is a photo of the other end of the 4th extension cable with the diode plugged in, labeled, & wire-tied to the top of an adjacent harness more in the open:
Each of the extension cables is a 2-prong trailer connect cable, about 16" long, from NAPA, part # 784640. Cost for all 4 was about $22.

Hey Wally, Nice Mods! I just recently purchased a used 2012 L223 and mine came with the battery cut-off installed. The dealer i bought it from said there was a battery drain and didn't know why but there was a cut-off switch. I'm glad to hear that my troubleshooting may be shortened drastically since you indicated the cause of the battery drain on yours is a common thing due to a stuck relay. I would be very interested in knowing more about the stuck relay, it's location, is it fixable? or is it a happens so regular to not bother? Any info you can pass along would be greatly appreciated.

Patrick

Patrick...I've never been able to verify a stuck relay, or in fact the source of the very small battery drain.
So, I use my battery cut-off switch to save the battery when the machine is not being used. Incidentally, I think I have to replace my battery cut-off solenoid switch, as it doesn't seem to pass enough current anymore to allow the machine to start. I need one more heavy duty, rated for continuous load.
In the meantime, I have the cut-off switch by-passed & I leave a battery minder on the machine when it's not used.

i too have a cut-off switch in in place. was just wonderin if i had to replace a relay to be the best solution. if so i am interested in the part number of the relay.
thank you for the reply