1Z Battery light wire

[phil miller]

Hi all got my 1Z in and running, the loom has a Blue wire that goes to the battery light on the dash, the only way the alturnator will charge is if this wire has a 12v feed to start the charge so to speak, and way ive tried connecting this to an ign live but it doesnt turn the engine off on the key, ive looked on the wiring diag but it just shows it going into the cluster, my cluster is fooked and needs a new printed ciruict board so i cant connect it to the batt light, any ideas?

[ewenmaclean]

Hello,

I think it's possible that the alternator when charging is still passing voltage through to the ECU via the ignition switch connection you've made somewhere. That wire has resistors and an led between the light and the alternator connection, so I reckon connecting it straight to the ignition is causing it to pass current back again to ECU, and hence opening the shutoff solenoid and the quantity adjuster. I'd suggest putting a 12v led and resistor in line with the connection to the alternator and see if it stops the ECU continuing to get power. The 109 relay is quite important for the power to the ECU - I'm guessing that's all in place too?

Been following your build thread - good work! Hope you get it up and running soon.

Ewen

[phil miller]

Hello,

I think it's possible that the alternator when charging is still passing voltage through to the ECU via the ignition switch connection you've made somewhere. That wire has resistors and an led between the light and the alternator connection, so I reckon connecting it straight to the ignition is causing it to pass current back again to ECU, and hence opening the shutoff solenoid and the quantity adjuster. I'd suggest putting a 12v led and resistor in line with the connection to the alternator and see if it stops the ECU continuing to get power. The 109 relay is quite important for the power to the ECU - I'm guessing that's all in place too?

Been following your build thread - good work! Hope you get it up and running soon.

Ewen

Hi Ewen yeah the 109 is in place i tried the LED bulb and it works a treat so all ive gotta do is get a working cluster and all will be fine, we have just put the kids bikes in the bus and i drove the bus and the OH drove my car with the kids up on the moor, they had a great time, all ive gotta do now is fit some rear seats

[ewenmaclean]

Good news - glad the diode worked and you got to go out for a cycle...

There's a thread on here about alternative clusters which is quite good - I use the original one with all sorts of extra switches for cruise etc and it looks a bit like a dog's dinner but it all works at least! If I worried about what things looked like I wouldn't leave the house.

Good luck getting it all sorted!

Ewen

[phil miller]

Good news - glad the diode worked and you got to go out for a cycle...

There's a thread on here about alternative clusters which is quite good - I use the original one with all sorts of extra switches for cruise etc and it looks a bit like a dog's dinner but it all works at least! If I worried about what things looked like I wouldn't leave the house.

Good luck getting it all sorted!

Ewen

just had a look at the thread, it great to pull something like that off, but atm i think ive got to many other issues i have to sort to start on a dash swap lol