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Thanks for explaining the schematics for the relays. It would be good to get an electrical schematic for the A1. Replaced the entire 3106 circuit ( automatic battery disconnect) yesterday with the update version and the LMTV is now fully functioning.

Yes that makes sense. Ordered the updated version of this entire 3106 Link to relay Which looks totally different from mine.. but that is good thing. There are two positives coming into the 3106 per other PDF I posted, one is voltage regulator and the other one is some kind of cutoff, not...

Here is a good link: Schematic I should be looking to replace the entire 3106 battery disconnect system, since the newer models look much more sturdy.

Let me get this right, since its important for me to know how it supposed to work. 1. closed / aka closed circuit , the current is flowing, 2. open circuit = current is not flowing. Are you saying if there is NO Voltage on X1 and X2 control terminals than the circuit is open hence nothing is...

The relays in question are the 30.313.12.901 I want to make sure they are really the source of this issue.. and defective. Almost considering dump this complexity and just have a proper bypass, which is not easy to do since the wires are huge.. what gage should I be using? or well maybe just a...

I have bypassed the 12V selenoid/relay with the a wire and it worked ok in terms of getting correct reading in the cab etc.. ( so definitely the issue is the relay or what is controlling the relay in the battery switch box) I was looking at this a bit longer and there are four white wires that...

I did clean up the terminals on the outside off the relay and connector wires, is that what you mean? Is there a way to disassemble this relay and fix it? I did find one for $350 on eBay... crazy, so alternatives would be good.

Attaching new image, its some kind of relay. Can I bypass it?? Any idea where to get one , or what is the part number, I suppose can take it out all the way..and see what is on the device..

I have developed a strange electrical issue on my 1078 A1. The vehicle was running like a charm, than I turned off the power disconnect next to battery. After a while turned it back on.. The LEDs were acting funny.. but the truck started,, once it started , all was good. Than got home, turned...