Wiring nightmare

429 Views 9 Replies 6 Participants Last post by Hans&Feet, 6 d ago

Michael Burkes

Discussion Starter · 29 d ago

I'm new to the forum and need some help badly. I have a 03 vtx 1800c that I've owned for several years and have had no problems but after sitting a couple of years it wont start so I've been going through the fuel system. After removing the tank and seat I've uncovered a nightmare of wiring splices and an aftermarket fuel programmer. What I need is a clear color coded wiring diagram so I can clean this mess up. Can anyone help me out please?

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House O' Pain

· #2 · 29 d ago (Edited)

See if this older thread helps:

1800 schematics and other related items

If your bike has been sitting for a couple years, with no issues of starting before the most likely cause is bad fuel. The fuel begins to oxidize and break down only after a few months and can result in clogging your fuel system. I would totally dump all your gas and replace with fresh fuel and some Techron for cleaning the fuel injectors.

How is the battery? If it hasn't been on a charger to keep it up to charge you may need a new one.

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Hans&Feet

· #3 · 29 d ago

Clear color coded wiring diagram???
We have wiring diagrams that can be printed on large paper.
Office depot, Wally world and other prints shops.
I split some diagrams into two pieces and it works good enough for me.
The left side> 1800 schematics and other related items

The Right side> https://www.vtxoa.com/attachments/02-04vtx1800c_-right-schematic-jpg.211545/

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Chicago-Spike

· #4 · 28 d ago

Welcome.....almost everything including electrical schematics can be found on the How To;Step-by-Step board

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Mr. Incredible

· #5 · 11 d ago

I had a similar problem with my 1800, the shops that did some custom work for me back in 2006-2007 sliced and diced the harness in multiple places.

when I rebuilt the bike last summer I just got a new wiring harness, it was a lot easier than trying to deal with fixing the mess. $250 from partzilla. took about 4 hours to tear down, remove and replace. everything is connecter specific, so near impossible to screw up., but take pictures as you remove just in case.

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rangers4u

· #6 · 11 d ago

Mr. Incredible said:
I had a similar problem with my 1800, the shops that did some custom work for me back in 2006-2007 sliced and diced the harness in multiple places.

when I rebuilt the bike last summer I just got a new wiring harness, it was a lot easier than trying to deal with fixing the mess. $250 from partzilla. took about 4 hours to tear down, remove and replace. everything is connecter specific, so near impossible to screw up., but take pictures as you remove just in case.

Mr. I., we've missed you for awhile. Glad you're back. Hope nothing serious.

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Mr. Incredible

· #7 · 8 d ago

rangers4u said:
Mr. I., we've missed you for awhile. Glad you're back. Hope nothing serious.

yeah, lots of serious stuff and bad stuff. the past year has broken me. emotionally, mentally, financially. hanging in one day at a time and even that is hard to manage.

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rangers4u

· #8 · 7 d ago

Mr. Incredible said:
yeah, lots of serious stuff and bad stuff. the past year has broken me. emotionally, mentally, financially. hanging in one day at a time and even that is hard to manage.

Prayers extended. You can come and vent with any of us any time.

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Mr. Incredible

· #9 · 7 d ago

rangers4u said:
Prayers extended. You can come and vent with any of us any time.

thanks

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Hans&Feet

· #10 · 6 d ago

I added another 02-04 1800C First Gen 1800 schematic with Green Ground wires.
There is a 14 pin Yellow connector for all the Green wires.

https://www.vtxoa.com/attachments/02-04vtx1800c_schematic-green-trace-jpg.219638/

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