If anyone is interested
So after adjusting my charger from 87.6v down to 86.1v I decided that a added voltage display would be a good thing to have, and also you can check when charging and maybe get abit of an estimate of time scale when charging,
All you need is this part https://www.ebay.co.uk/itm/152065577967,
A drill,some silicon sealer, a file,masking tape,soldering iron,philips screw driver,sharp blade
The LED display comes with 3 wires it needs 4-30v to work red is it power feed yellow is measuring feed, black is earth,
So the fan feed is 12v perfect so connect red to that,yellow to charger output live black to output earth which is also earth for the fan perfect
So after adjusting my charger from 87.6v down to 86.1v I decided that a added voltage display would be a good thing to have, and also you can check when charging and maybe get abit of an estimate of time scale when charging,
All you need is this part https://www.ebay.co.uk/itm/152065577967,
A drill,some silicon sealer, a file,masking tape,soldering iron,philips screw driver,sharp blade
The LED display comes with 3 wires it needs 4-30v to work red is it power feed yellow is measuring feed, black is earth,
So the fan feed is 12v perfect so connect red to that,yellow to charger output live black to output earth which is also earth for the fan perfect