Thunderbird tr65 check charging ?

[tigerrod]

Has anyone got info on how to check the charging rate on a meridan built 198 tr65 thunderbird as mine charges ok when running without lights but put lights on and it starts to discharge any help appreciated .

[Tman]

DVM across the battery and run the engine?

[Paul in NZ]

Best thing is to track down the workshop manual and check what it recommends - they are usually pretty good.

What tools have you got? Do you have a digital meter?

[tigerrod]

All sorted removed the original reg rec and fitted modern 4 wire unit from LP Williams in Lancashire part number : reg 001 replaces zener and original gave out a steady 13.9 v and increased as required no problems now and is very neat fitting , easy to wire in two yellows to stator wires and black to battery earth and red to battery positive .

http://www.triumph-spares.co.uk/cat_details.php?p_head=Charging%20system