P1000 Reverse lights wiring

[Sledneck_06]

ok guys wanted reverse lights on 3 way switch on off on. All the way up is basic hot to the rear lights. Then off middle. Then down/on while headlights are on and shifted into reverse rear lights come on. So I wired relay to this #85 headlight trigger #86 reverse trigger. #30 fused power. And last #87 power out. All worked great till machine wouldn’t start. I’m thinking my reverse switch being a ground switch is messing with it. Possibly backfeeding. Because gear indicator is confused. Can I get a diode and plum that in between relay and reverse trigger? Or is there a way to wire it correctly? Thanks in advance

 

[Admin]

 

[dnjones161]

Way above my head but following for an answer because I like this set up

 

[Sledneck_06]

Had a good write up I found but used the factory reverse backup auxiliary wiring. Not sure if it was ever completed though as everything wiring worked but now machine wouldn’t start?

 

[Hondasxs]

Your most likley right about the ground feedback. I bet it will crank if you put it in R and press the brakes? Check and let me know.



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[Hondasxs]

Unless you are running a large light bar or wanted key off light you could have done this.

You found the backup beeper plug blank, right? Is this where you got the ground trigger?
Located under the bed area?

Ok.
Run the ground trigger wire up to the switch. Then flip it with the switch as a input. Have another solid ground as a input. Then run the output to the light as ground.
DONE.
No need to mess with 12v or a relay at all.

You can get 12v from 2 places. The white/black stripe wire in the beeper plug. Its key ON!

Or
For headlight only. Pull 12v from the tail lights. Ensure your not tapping brake lights.

Both can handle a small light bar or a set of cubes.

 

[Sledneck_06]

Well I just tapped the grey wire under seat for reverse trigger. I already disconnected the reverse trigger for now as I need to use the machine tomorrow. When I did that the gear display worked again and fired right up. And instead of using the factory reverse I just ran my own 2 wires to the front. Would a diode work in this situation?

 

[Sledneck_06]

Also I only want reverse lights to come on when headlights are on.

 

[Hondasxs]

Yes it should on the ground trigger wire going to your relay.

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[Hondasxs]

Also I only want reverse lights to come on when headlights are on.

Edit. Added to post 5.

-----

But adding the diode should get it done for you.

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[Sledneck_06]

So power from taillights and reverse trigger as solenoid trigger won’t still backfeed my reverse switch?

 

[Sledneck_06]

Or with diode also?

 

[Hondasxs]

So power from taillights and reverse trigger as solenoid trigger won’t still backfeed my reverse switch?

Yes.

Keep what you got. (Adding diode) It should work.

My example is an alternate method one can use without a relay.

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[Sledneck_06]

Perfect thanks for your help!

 

[ToddACimer]

I added a diode to mine.

Here's a photo of my test harness. Ground from the machine into the blocking side of the diode and ground from the dash into the light side of the diode.




Here's the full description from my build thread:

Finished up my switched ground for reverse lights in reverse and with the dash switch. I found that using chassis ground through the switch and to the lights caused a back feed to the transmission ground signal which kicked the transmission out of gear. To eliminate the backfeed, I added a diode before my dash mounted switched ground. I found a mini fuse sized diode AC Delco 96500202 which is a GM fog light diode and it fits in a little fuse mini fuse holder Littlefuse p/n 0fhm0001xp. This allows the machine to provide ground through the diode but does not allow ground back from the lights and switch when the dash switch is on. Double check the mounting orientation such that it is blocking ground the correct direction. The marking on the diode looks like a vertical line with an arrow pointing towards the line. The arrow should point away from the lights and added ground


Updated switch panel


I missed the part about the headlights. Just a diode won't fix your problem completely

 

[BigOL3]

ok guys wanted reverse lights on 3 way switch on off on. All the way up is basic hot to the rear lights. Then off middle. Then down/on while headlights are on and shifted into reverse rear lights come on. So I wired relay to this #85 headlight trigger #86 reverse trigger. #30 fused power. And last #87 power out. All worked great till machine wouldn’t start. I’m thinking my reverse switch being a ground switch is messing with it. Possibly backfeeding. Because gear indicator is confused. Can I get a diode and plum that in between relay and reverse trigger? Or is there a way to wire it correctly? Thanks in advance

Way above my head but following for an answer because I like this set up

LOL ..... yeah, lost me a 'diode'!

 

[ToddACimer]

LOL ..... yeah, lost me a 'diode'!

The fundamental property of a diode is its tendency to conduct electric current in only one direction. That's what we are trying to do. We have 2 ground sources and the transmission source can not be back fed by the dash switch. By blocking the dash switch ground the transmission doesn't see the ground signal and the lights work.

 

[OnTheJob]

I tried this same 3-way switch set up but I failed. My small electrical brain hurt a lot. I just stuck with the reverse lights only in reverse. I haven't felt the need to revisit. I thought it would be cool to be able to manually switch on the reverse lights for added lighting to my 180 but the tray lights were enough. I am less stressed.

 

[BigOL3]

I tried this same 3-way switch set up but I failed. My small electrical brain hurt a lot. I just stuck with the reverse lights only in reverse. I haven't felt the need to revisit. I thought it would be cool to be able to manually switch on the reverse lights for added lighting to my 180 but the tray lights were enough. I am less stressed.

I went even more simple than that. I attacked 2 LEDs to the rear and ran them to a switch I turn on when backing or just needing a rear light ..... lol

 

[ToddACimer]

I went even more simple than that. I attacked 2 LEDs to the rear and ran them to a switch I turn on when backing or just needing a rear light ..... lol

I'd rather have it being a process with no thought. People I ride with like that the lights come on automatically because it tells them I'm backing up.

 

[Sledneck_06]

Installed the diode and now it all works perfectly! Thanks for everyone’s help!