got rid of that airfilter now
doing some indicator mods by fitting some 501 (T10) bulb holders connected either to the ignition or side lights
these were from a scrap yard as a test
then as I burnt out 3 heater resistors and could be down the motor so got it out stripped down and greased up, fingers crossed it will have solved the problem
smoke from the brand new resistor before blower removal
blower is running