Brake lights slow to come on. Daimler SP250

[geeman237]

I have to press the brake pedal very firmly for the brake lights to come on with my Daimler SP250. The brake set up is, master cylinder to in-line residual pressure valve (see http://www.summitracing.com/parts/WIL-260-1874/ for details of the specific part), then onto a 4 way brake valve which also has a port for the brake light switch. The cars were originally built with an inline valve and this Wilwood one is a modern day replacement.

I have a new brake light switch to fit, but before I do, does anyone have any experience of this on their car and it might be something else? The brake pedal is firm and the car stops well (no servo fitted) but under normal driving and brake the brake lights don't come on. You really have to press down firmly for the lights to come on. Obviously this is a safety concern if some is coming up behind you!

Thanks in advance.

[geeman237]

Thanks for the quick responses. I will go ahead and swap out the switch and see if that works. I do know other owners have had some problems in this area.
.....Oh, the joy of bleeding the brake system....

[geeman237]

Thanks for the extra tips. I will give them a go, hopefully at the weekend.