Here's the wiring mods to remove the rectangular instruments

John Michaely · Aug 27, 2016

All the lights are on soon as I turn my ignition on head tail and brake

k-moe · Aug 27, 2016

Hmmm......
Is there evidence of wiring modifications that were "gifted" to you by a previous owner?
I think it's time for you to start a thread for your bike if you haven't already, so we don't clutter this thread up.

Bo. · Sep 29, 2017

cturek said: ↑

I recently removed the rectangular instrument panel and installed a round headlight on my 1982 750 Seca. Here are the wiring mods if you want to remove the rectangular instrument panel. You can elect to keep the original headlight or replace with a different type.

After you separate the connectors and remove the rectangular instrument panel and relocate to your work bench. Remove the back cover and you will see the wires that go to the blinker lamps, neutral lamp and high beam lamp. You don't have to make any changes to the wiring to these lamps because the wires exit directly out of the Atari and go to their own connectors. You can do whatever you like with these wires. Redirect to alternate lamps or LED's (don't forget the current limiting resistor) if you want to retain the blinker, neutral, high beam indicators.

The headlight and tail/brake light wiring is a different matter. The wiring for these go from the harness into the Atari as one color and most exit the Atari as different colors. Below I have listed the cuts/jumpers you need to do in order to reconnect the headlight and keep the tail/brake lights operational.

For the head light, there is a six conductor connector (the one with the heavier wires) coming from the wiring harness. You need three of these wires for your headlight. The black wire is ground. The yellow wire is your high beam and the green wire is the low beam. The wires coming from the headlight connector are slightly different. Connect the two black wires together for the ground and then connect the yellow high beam wire to the headlight connector's yellow/green wire and then connect the green low beam wire to the headlight connector's green/red wire.

The wires for the tail/brake lights come out of the wiring harness in the same group of wires as the headlight wires but head off to a different connector than the connector that holds the headlight wires. You can see this on the wiring diagram below. You simply need to install a jumper at the connector or remove the connector and connect two pair of wires together. For the tail light you simply connect the blue and blue/white wires together and for the brake lights you simply connect the green/yellow and yellow/white wires together.

Thats it. This should also work for the Maxim as I checked it's wiring diagram and with wire colors I described above are the same for the Seca or Maxim.

Here is a scan of the mods recorded on the wiring diagram. Looking at this will make it easier to understand my comments above.

Here is a photo of the actual wire changes. The green, yellow, black headlight wires are already insulated and head off to the headlight, but you can still see them. The tail/brake light connections are soldered, but not insulated yet.

And here is a shameless picture of my Seca with the round headlight.

Hope this helps.
Click to expand...

cturek said: ↑

I recently removed the rectangular instrument panel and installed a round headlight on my 1982 750 Seca. Here are the wiring mods if you want to remove the rectangular instrument panel. You can elect to keep the original headlight or replace with a different type.

After you separate the connectors and remove the rectangular instrument panel and relocate to your work bench. Remove the back cover and you will see the wires that go to the blinker lamps, neutral lamp and high beam lamp. You don't have to make any changes to the wiring to these lamps because the wires exit directly out of the Atari and go to their own connectors. You can do whatever you like with these wires. Redirect to alternate lamps or LED's (don't forget the current limiting resistor) if you want to retain the blinker, neutral, high beam indicators.

The headlight and tail/brake light wiring is a different matter. The wiring for these go from the harness into the Atari as one color and most exit the Atari as different colors. Below I have listed the cuts/jumpers you need to do in order to reconnect the headlight and keep the tail/brake lights operational.

For the head light, there is a six conductor connector (the one with the heavier wires) coming from the wiring harness. You need three of these wires for your headlight. The black wire is ground. The yellow wire is your high beam and the green wire is the low beam. The wires coming from the headlight connector are slightly different. Connect the two black wires together for the ground and then connect the yellow high beam wire to the headlight connector's yellow/green wire and then connect the green low beam wire to the headlight connector's green/red wire.

The wires for the tail/brake lights come out of the wiring harness in the same group of wires as the headlight wires but head off to a different connector than the connector that holds the headlight wires. You can see this on the wiring diagram below. You simply need to install a jumper at the connector or remove the connector and connect two pair of wires together. For the tail light you simply connect the blue and blue/white wires together and for the brake lights you simply connect the green/yellow and yellow/white wires together.

Thats it. This should also work for the Maxim as I checked it's wiring diagram and with wire colors I described above are the same for the Seca or Maxim.

Here is a scan of the mods recorded on the wiring diagram. Looking at this will make it easier to understand my comments above.

Here is a photo of the actual wire changes. The green, yellow, black headlight wires are already insulated and head off to the headlight, but you can still see them. The tail/brake light connections are soldered, but not insulated yet.

And here is a shameless picture of my Seca with the round headlight.

Hope this helps.
Click to expand...

That picture of the wires you changed, is that the ONLY wires you needed to alter?

Timbox · Sep 30, 2017

Bo, have to done all the reading in K-moes signature yet? If you have great! If not take the time it will really help out.

k-moe · Sep 30, 2017

Bo. said: ↑

That picture of the wires you changed, is that the ONLY wires you needed to alter?
Click to expand...

All the wiring changes are covered in his first post. If you've done that, and are sill having problems, then something else is wrong. Please start a thread if you have not already.

AndyC · Jan 24, 2019

Awesome, I am in the middle of fixing a barn find and I think the info here will guide me well. I have a few questions and since this is an older post not sure if I’ll get an answer but here goes. Could I just use pin connectors to tap into the harness instead of making any cuts? I wasn’t sure.

XJ550H · Jan 24, 2019

you can buy the pins and mating connectors from our supporting vendor and do the job with out cutting wires.

logo in upper right corner of page.
or www.xj4ever.com

or this thread

XJ4Ever - Supporting Vendor

you can also just start a conversation with him Chacal is his name even has the crimping tool you can rent if needed

myhomework8mydog · Jul 4, 2020

Sorry to dredge up ancient artifacts from threads gone by but anyone know why the pictures from earlier posts here wont display anymore? They worked for me a few weeks ago. Doing the Atari delete and would like to reference some of those photos.

Thanks!

k-moe · Jul 4, 2020

myhomework8mydog said: ↑

Sorry to dredge up ancient artifacts from threads gone by but anyone know why the pictures from earlier posts here wont display anymore? They worked for me a few weeks ago. Doing the Atari delete and would like to reference some of those photos.

Thanks!
Click to expand...

Which images specifically? I'm seeing all of them but a few.What browser are you using?

XJ550H · Jul 4, 2020

k-moe said: ↑

Which images specifically? I'm seeing all of them but a few.What browser are you using?
Click to expand...

in chrome i see all photos except a few posted by Rickomatic on first page plus a broken link he posted for ilumanited tach.
IIRC rick deleted his photobucket account when Photobucket had there change of displaying on certain web sites

k-moe · Jul 5, 2020

XJ550H said: ↑

in chrome i see all photos except a few posted by Rickomatic on first page plus a broken link he posted for ilumanited tach.
IIRC rick deleted his photobucket account when Photobucket had there change of displaying on certain web sites
Click to expand...

That's the same for me in Safari.

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Here's the wiring mods to remove the rectangular instruments

John Michaely Member

k-moe Pie, Bacon, Bourbon. Moderator Premium Member

Bo. New Member

Timbox Well-Known Member

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AndyC New Member

XJ550H Well-Known Member Premium Member

myhomework8mydog New Member

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XJ550H Well-Known Member Premium Member

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