XSeries-forum

These Hedge-Hog units are a sodding nuisance.

I have a NEW issue resolution to throw into the mix.........
A month ago I was also having fan issues, & swapped out 3 regulator hedgehogs to no avail, & getting intermittent fan operation now & then.

I found the remedy quite by mistake.... when groping the wiring harness while the ignition was on, & the fan controls were powered ON.

It turns out that the connector socket that plugs into the Hedge-Hog has female pins that can expand & cease to make contact with the Hedge-Hog MALE pins, or intermittent/poor contact.

If it is a poor or light contact, then the connector sockets/pins will heat up & fail due to the heat & burned connector, then you fit another Hedge-Hog & a few days later the whole situation repeats again.
The hotter an electrical contact becomes, the more electrical resistance is generated until the contact gets scorched/burned & fails.

I found that the fix was to very slightly bend the male pins of the hedge-hog module to ensure a good connection in the wired plug connector.

This may not be the fix for every issue with this temperamental device, but may be worth considering.

Regards to All
Grant B

That’s a great tip.

I wonder also if the copy parts also have different sized male pins and this causes the female receptacle to be expanded so making the situation worse?

It’s an interesting point, they obviously can last a long time as the b3 one was/is stamped 1999 so 24yo but certainly if any of mine play up again I’ll try this remedy before splashing out.