[maestro7879]

Looking for some help or info on this one.

The current state is the following.
I have 6 used 12v lead acid batteries installed and holding voltage at 74v.

If I jack the front end the wheels will move slightly then stop when on the throttle. I put a meter across the contactor and didn't see any voltage drop.
If I let it sit for a few seconds it will move a bit more, try again quickly and it will move very little.

The dash also has one red light on it which doesn't appear to be an error only part of the display. The stock green lighting is missing.

I'm trying to figure out next steps. The goal is to move to lithium but I want to make certain I have a working vehicle before I drop the $ for that.

I'm also unable to identify the controller.

Thanks for any info.

 

[maestro7879]

Pictures for above post

 

[maestro7879]

Thanks. I found this online. http://www.fsip.biz/Documents/1209.pdf

From this info I can easily bypass and troubleshoot using these diagrams. I wasn’t aware that controller was hiding in there. Makes a lot of sense now, figured I had a one off controller from the looks of it with the cover on.

 

[maestro7879]

First, You might want to charge those batteris, they practically discharged at 12.3V each.
You should see 76.8-77.4V when they are charged.

Seems like its only low battery and the controller shuts down, then when the voltage bouncing back it's on again...

I will give it a try. Wish I knew what the LVC was.
If I push the pedal it will lurch forward a tiny bit so it seems that systems are working but it doesn't have the juice needed. It will do that in forward and reverse.

Still no dash lights but that could either be voltage or possibly grounds or a bad display.

 

[maestro7879]

I don’t have a load tester.
I have a good meter and a genius 7200 charger.

I will test the drop.
I did have it on one side of the contractor last night and the voltage didn’t change when hitting the pedal. Should I test voltage drop at the battery ?

 

[maestro7879]

Based on the above it Sounds like no current is flowing

I'm going to start with the grounds under the dash and connect them to the - of the 12v accessory battery (this is working, i have headlights, signals, etc.).

Is there any advice on tracking down the grounds ? I think I saw a black w/white stripe that connected to quite a few switches. Guessing that's the ground but I have to look further to see what travels to the instrument cluster.

 

[maestro7879]

I figured out the issue with no power to the wheels. Some animal lodged an acorn in the second contactor and it wouldn't close. Cleaned it all up and she's moving again.

The only issue that remains is that I have no gauge lights.
I have turn signal, head light indicator and the other general lights but the green fluorescent light isn't lighting (speedo, battery level, etc.). Any ideas ?

I went through some voltages on it and I see 12v on quite a few wires going into the cluster but still no go. I'm guessing I can't just replace this with something else easily.

Thanks