Ehc rip install

[Savage 1]

I believe I read somewhere that there is a 20 amp fuse on each bus. That fuse should've blown when the power probe was activated.

That makes sense, however, I'm not there. You are the eyes and ears for everyone.
Pure speculation, I'm not clear, but, I assume you had power probe attached to battery.
For instance, my power probe will allow 65 amps to flow if I don't adjust it. So, if
over 20 amps was inserted into the circuit with probe, the fuse should be blown.

Result: no power on power-up circuit

 

[Savage 1]

Read this, explains how both buses are protected internally by 20A fuses. The wiring diagram displays them as well.

Now let's hope they opened and protected the rest of the components.

Check for the yellow light fault on power distribution circuit. Then trace wires or I personally would perform voltage drop to locate the short Curtis mentioned.

Once you locate and repair short, hopefully, the ole Dog will be up and barking again!

 

[Jersey Big Mike]

Ok, a couple of things here.

When/if you need to run / test 12v to the speedo, you want to do it by disconnecting the red wire that goes to the EHC and test with just a 12v wire to the speedo with ground and the signal (green wire).
In you case, maybe disconnect the speedo completely and apply 12v and ground and see if the speedo comes on.
then chase why speedo is not getting power from harness.
The 14ohms you measured on the one ground wire is likely indicitve of a problem.

Disconnect speedo and speedo sensor plugs.
When you power up, do you get running lights and headlight.

When putting everything back together, be methodical -- attach switches in handlebars and starter/compression releases and power to the ehc.
press run/stop then press start (briefly) and see if she turns over.
Add a circuit one by one and test. (some need more than one connector)
If you need specific help with this PM me and I can give you my number and try and help you step thru the process of elimination.

 

[Savage 1]

Troubleshooting format of what Mike is talking about.

 

[Nwhicks21]

Sorry guys been tied up with life the last couple days, but I got another harness and gonna start from scratch tomorrow hopefully, work permitting. Fingers crossed

 

[Savage 1]

Great news Boss, the attachments display the circuit protection for EHC.

This is for future reference or other members that may wonder what the symbols are or how the EHC is protected.

The fuses are located on bus 1&2 as previously mentioned. The fuses are resettable and save the EHC in the event of over current or short.

 

[Nwhicks21]

Internally it appears? I got the new harness 75% installed this afternoon and good news my Speedo works finally lol, so now I just have to replace a few 8 pin jst connectors bc I fuvked a few up trying to pull this damn backbone harness through (what a bitch that was), but it’s all minor buttoning up now. Thank you all for the help. Also, this dang thing rides like a tank, it’s got progressive suspension underneath it and it looks in good shape, but when I hit a minor bump on the highway at 70 mph if I don’t have a death grip on them bars it would throw my ass off that bike, no joke! Is this normal?

 

[Nwhicks21]

Also does anyone know any trick to depin these jst connectors?

 

[Savage 1]

On the harness, I wrapped in tape and put Vaseline on it.

I use the little set you can buy on Amazon to de-pin the connectors. Makes it easy.

Mine is the same, it rides rough. I use to have fillings in my cavities, not anymore!

 

[Savage 1]

Terminal Removal Tool Kit 82 Pcs Depinning Tool Electrical Connector Pin Removal Tool Kit Pin Extractor Terminal Release Tool Set for Automotive Car https://a.co/d/0ePKylTe

 

[Savage 1]

 

[Nwhicks21]

On the harness, I wrapped in tape and put Vaseline on it.

I use the little set you can buy on Amazon to de-pin the connectors. Makes it easy.

Mine is the same, it rides rough. I use to have fillings in my cavities, not anymore!

Yes I used dielectric grease and I wrapped it tight as fuk and still was hell… 2nd attempt I finally got it through but wow… what a pain in the ass! Much better than having that middle connector from the gen 2 kit tho. I like having minimal connections. I might just hardwire and solder the hand controls together if I can’t get these old jst connectors off safely from my old harness. I did screw up tho and forgot to run my coil harness through with it, but I would’ve def never got it through then! I guess it’s just getting zip tie job under the backbone because I’m not doing that shit again.

 

[Nwhicks21]

On the harness, I wrapped in tape and put Vaseline on it.

I use the little set you can buy on Amazon to de-pin the connectors. Makes it easy.

Mine is the same, it rides rough. I use to have fillings in my cavities, not anymore!

Also someone else told me they ride GREAT even the ridge backs, so maybe the suspension froze up from sitting so long? Idk. But for a soft tail there’s no way it should be this bad, man I’m not kidding I stg there’s about 3-4 times this fuckr damn near launched me off the bike from a minor bump in the interstate

 

[Nwhicks21]

This is the set I have, and the only one that I could get to work about 25% of the time was the first one the very little small one

 

[Mickmorris]

Also someone else told me they ride GREAT even the ridge backs, so maybe the suspension froze up from sitting so long? Idk. But for a soft tail there’s no way it should be this bad, man I’m not kidding I stg there’s about 3-4 times this fuckr damn near launched me off the bike from a minor bump in the interstate

Yeah you probably should check those shocks out. I have progressive shocks on my iron horse and it is very smooth over bumps on the highway

 

[Savage 1]

Yes I used dielectric grease and I wrapped it tight as fuk and still was hell… 2nd attempt I finally got it through but wow… what a pain in the ass! Much better than having that middle connector from the gen 2 kit tho. I like having minimal connections. I might just hardwire and solder the hand controls together if I can’t get these old jst connectors off safely from my old harness. I did screw up tho and forgot to run my coil harness through with it, but I would’ve def never got it through then! I guess it’s just getting zip tie job under the backbone because I’m not doing that shit again.

No harm, no foul. The EHC got a bad wrap in the beginning. The electrical was contracted to aeronautical engineers. Trust me, they were intelligent enough to design the system.

Most of the problems in the beginning were related to the 40 amp charging system and cramming wires down the back bone.

Like some have mentioned here in a forum, oftentimes the EHC was replaced because the owner or the mechanic were unable to figure out the problem. It would work for a short period, then they would replace the charging system and harness.

Lessons for us all, there is much more to electronics and bike repairs then cutting and soldering a wire. In short, many factors must be considered. One either studies the service manual and circuit analysis or ultimately spends a lot of money after being broke down on the road countless times.

As long as the wires have the proper gauge and ampacity and are placed away from the heat, I see no reason why your idea for the coil wouldn't work.

Great job man, glad the Dog is barking!

 

[Nwhicks21]

No harm, no foul. The EHC got a bad wrap in the beginning. The electrical was contracted to aeronautical engineers. Trust me, they were intelligent enough to design the system.

Most of the problems in the beginning were related to the 40 amp charging system and cramming wires down the back bone.

Like some have mentioned here in a forum, oftentimes the EHC was replaced because the owner or the mechanic were unable to figure out the problem. It would work for a short period, then they would replace the charging system and harness.

Lessons for us all, there is much more to electronics and bike repairs then cutting and soldering a wire. In short, many factors must be considered. One either studies the service manual and circuit analysis or ultimately spends a lot of money after being broke down on the road countless times.

As long as the wires have the proper gauge and ampacity and are placed away from the heat, I see no reason why your idea for the coil wouldn't work.

Great job man, glad the Dog is barking!

Yes, FS! …. In a sense, I am very glad this happened bc it was a great learning experience for me to understand my bike and everything about it. Learned where and what a lot of components are and their functions, how to troubleshoot them, locations for information/manuals…. Just how touchy these things can be! For example, after I got it running with the first harness install and lost power and I was freaking out, thinking needed a new 800$ harness and ehc…turned out my battery was just a little below 12v, and apparently they are not happy with anything but a full battery. IMO it’s something every bike owner should go through to fully understand the ins and out of their scooter. But it was a huge help from all you guys and I really really appreciate it!

 

[Nwhicks21]

On the harness, I wrapped in tape and put Vaseline on it.

I use the little set you can buy on Amazon to de-pin the connectors. Makes it easy.

Mine is the same, it rides rough. I use to have fillings in my cavities, not anymore!

I do kinda wish I would’ve took a grinder or dremel or something and just bored out the holes a little and I think that would’ve made life a lot easier squeezing that thing through there bc these connectors suck

 

[Savage 1]

Also someone else told me they ride GREAT even the ridge backs, so maybe the suspension froze up from sitting so long? Idk. But for a soft tail there’s no way it should be this bad, man I’m not kidding I stg there’s about 3-4 times this fuckr damn near launched me off the bike from a minor bump in the interstate

 

[HMAN]

I installed some new Progressive's on the chopper and it made a world of difference. Give Curtis a shout and he can get ya rolling easy.