It kind of sounds like you have a harness made for a later year or different model. What was the part number on your harness?
I've been combing these posts about wiring and aux lights and thought I knew what I was doing! Apparently something else needs to be done. I am a novice with this, but was following steps others have done and certain instructions that have been posted. I followed the 12v accessory instructions to install the relay kit and harness.
I bought the relay kit and accessory harness for this. First thing I noticed was the harness only has 3 total accessory connections. Two 3 pin and one 4 pin connections. I was under the impression it should have 4 total accessory connections. I've attached pictures of it and how I have it plugged in on the bike. I have installed the new relay and 7.5 fuse, too.
Also, I bought the hitachi type connectors and attached them to my new LED aux lights to be able to plug it into the accessory harness.. Red on aux light to brown on harness and black on aux light to green on harness. I want to have the lights on all the time when the bike's power is on. After plugging the lights into the harness and turning the bike on, the lights don't have power.
Any ideas of what I should do next?
The pictures should be rotated a quarter turn to the right but they will show both ends of the harness.
Last edited by superdedooperman; 17th February 2018 at 11:57.
Part number is 08A70-MJL-D30. When I ordered, I went straight to Honda's accessory page and ordered from there. Mine is a 2013. This number is from my email. I'll check once I'm home tonight to verify it matches with the actual harness.
Last edited by superdedooperman; 17th February 2018 at 14:40.
08A71-MGS-D30 on my 14' 750, it has 4 plugs.
But yours should be fine. Polarity inversion? Do you have a voltmeter to check if the brown il negative indeed?
Last edited by Jos; 17th February 2018 at 14:54.
I don't, but I did attach the light both ways in case they were reversed.
Looks like they may have sent me the 2014 harness. The 2013 has a part number of 08A71-MGS-D30. So, looks like I'll be ordering a new one!
I'll sell the one I have for $18 shipped if anyone is interested. Model number 08A70-MJL-D30. The sticker on the harness looks like this:
Last edited by superdedooperman; 18th February 2018 at 20:52.
I've installed the correct sub-harness but the lights still don't have power. What say all the electrical gurus?? What should my next step be?
Sitting in an office chair attempting to diagnose this is difficult. I'd highly recommend going to a Harbor Freight or similar store and buy a voltmeter for under $10. Without the proper diagnostic tools, you/we are just guessing and likely to waste money.
In the absence of a voltmeter/ohmmeter, you might try connecting some other low power 12 volt device to the harness output and see if it works. If so, that would mean your LED lights are bad. You could also give the 7.5 amp fuse a close visual inspection, or swap it with known good 7.5 amp fuse and try the lights again. Third, put your finger on the new relay and you might be able to tell if it clicks when you power on the bike.
I did check the fuse and it looked bad. So, I changed for a good one and still no light. So, I checked my lights on my truck battery and no light. So much for cheap Chinese lights! I'll let you know when I check the harness with a volt meter and give you an update. Thanks for the input!