Negative cable location.

[TheFreakinPope]

Sorry for the dumb rudimentary question but I'm really new to working on things and I've scoured the forms trying to find this. I'm sorry if it's posted somewhere I just could not find it.

But where does the negative cable hook up on the bike itself? I'm having weird electrical issues I'm told to start there. I've already checked the battery and replaced it but it's still doing it. I called the Triumph dealer and they said it connected to the starter. I look there and I'm pretty sure that's the positive cable but is it in that location?

 

[Journeyman]

Sorry for the dumb rudimentary question but I'm really new to working on things and I've scoured the forms trying to find this. I'm sorry if it's posted somewhere I just could not find it.

But where does the negative cable hook up on the bike itself? I'm having weird electrical issues I'm told to start there. I've already checked the battery and replaced it but it's still doing it. I called the Triumph dealer and they said it connected to the starter. I look there and I'm pretty sure that's the positive cable but is it in that location?

Look at the top of this page for "Resources." You'll find the service manual there. That should help.

2020 Rocket 3 R GT Manual - Searchable by keyword

This is a SEARCHABLE version of the 2020 Rocket 3 R GT Manual. Updated 2-27-23 File size greatly reduced. Still searchable.

www.r3owners.net

 

[imcool]

Sorry for the dumb rudimentary question but I'm really new to working on things and I've scoured the forms trying to find this. I'm sorry if it's posted somewhere I just could not find it.

But where does the negative cable hook up on the bike itself? I'm having weird electrical issues I'm told to start there. I've already checked the battery and replaced it but it's still doing it. I called the Triumph dealer and they said it connected to the starter. I look there and I'm pretty sure that's the positive cable but is it in that location?

I did electronics measurement and battery drain calculation for rocket3R 2022 - Battery, Turn signals

Hello All, Hope it helps someone - Stock blinkers are 2watts 12V LED Array in each blinker/turn signal so they are consuming 167Milliamps per blinker. - When bike is completely OFF and Key Fob is ON and in range then motorcycle drains battery at 80Milliamps. - When bike is completely OFF and...

www.r3owners.net

check this thread and measure your bike values against the values in this thread and then remove relays one by one to see at which relay your issue stops.

 

[atomsplitter]

You can just chase the black lead from the battery to where it connects to the frame. You are correct, the wire to the starter's post is positive, the starter case is grounded so current flows from the battery thru the starter to ground. If the ground point on the frame is dodgy, you'll have all kinds of weird problems.

 

[TheFreakinPope]

Look at the top of this page for "Resources." You'll find the service manual there. That should help.

2020 Rocket 3 R GT Manual - Searchable by keyword

This is a SEARCHABLE version of the 2020 Rocket 3 R GT Manual. Updated 2-27-23 File size greatly reduced. Still searchable.

www.r3owners.net

I've been looking at that thing for months. I should of mentioned that my bad. It's not helped at all lol.

 

[imcool]

I've been looking at that thing for months. I should of mentioned that my bad. It's not helped at all lol.

your best bet is below,

try to find negative from OEM rocket 2500 cc harness

21 Triumph Rocket III 3 GT 2500 wire wiring harness loom | eBay

Part was removed from a 2021 Triumph Rocket III GT. VIN: SMTG10JX9MTAE6082. Shelf 24-2-2-B. I will do my best to resolve the issue.

www.ebay.com