Technical Sidelight and heater problem

[lee gsi]

Sometimes when I turn my heaters on my sidelights come on. Any ideas why?

 

[lee gsi]

Anyone have an idea?

 

[rallycinq]

Sounds like an earth problem.

Remove, clean, refit and grease all earth points.

Cheers

SPD

 

[Puntodriver1991]

Theres a guide in the punto section on this.
EDIT: this.... https://www.fiatforum.com/punto-guides/170894-mk2-my-sidelights-come-instead-my-interior-fan.html

 

[lee gsi]

I had checked/cleaned the engine bay earth but didnt cure it. Will try that next. I did search for 'headlight AND heaters' but it didnt bring anything up. Thanks again.