Fan override switch - idiots guide

[mk1fan]

Am I correct in thinking all I need to do to fit an override switch is;
1. Add wires to the two connectors.
2. Run these to a latching switch located somewhere convenient.

Cheers.

[Oldred_V8S]

You can do that, but why, not fit a lamp in the circuit as well to show when the otter switch has kicked in or you have left the over ride switch on? There is a good diagram in the bible.

[TVRees]

Basically, the otter switch connects the fan to ground. So, you could also trace the brown/green wire back to a point close to the fan relay, connect one side of your override switch in parallel to this point and the other side to a (good) ground. Consider using an illuminated switch.

[Top Gear TVR]

or buy an alley rad and wonder what the fan is for?

[Scoobimax]

Even I've fitted an override switch so must easy to do :-)

[mk1fan]

I'm thinking of an illuminated 20mm round on-off switch and matching LED light to come on when the fan comes on 'naturally'.

May put them up in the dash, rhs of the rev counter.

I'll make up a fly lead and connect in at the otterswitch. I'll loop the black wire into the earth stud behind the battery.

What do people think?

What colour - green or blue?

[phillpot]

mk1fan said:

I'm thinking of an illuminated 20mm round on-off switch?

Fitted in the cigar lighter hole (which is now on the left hand side).............