fridge doctor wrote:Hi bamber1,
I just took a look at the triple connector and it looks fine. Supplying the fan speed 3 direct sounds like a good idea though... but how do you know which wire is the right one? If I pull the connector off, or even cut the wiring to it, are there any tests I can do... I thought the resistor had to be in circuit, or is that just for the lower speeds?
Thanks for your help.
Bit of an update and change of plan.
Today after running a direct fused feed to the heater speed switch that fuse kept blowing, turned out to be the resistors shorting out on the metal cage, fixed that and it now runs fine so I have decided to keep it like that, the only prob is the fan runs with ignition off (due to direct feed from battery) so the next thing is to run the feed through an ign powered relay.
On my van I cut the main feed into the rear of the speed switch (violet with black tracer- comes from the fusebox) and connected direct feed onto that wire into the switch with a choc bloc. The cut end that goes back to the fusebox needs blanking off with tape or something.
So all speeds are now powered direct from the battery.
If you look at a wiring diagram you will see that full speed is diverted past the resistors which only give lower speeds.
As the weak link seems to be the main fusebox being overloaded on full fan speed and melting I'm hoping the speed switch will be ok handling full speed amperage, will have to wait and see.