68 Blower motor

[VAUGHN68]

I am having a problem with the a/c blower on my Le Mans. It semms to hvae only two speeds low & lower. I select high and get nothing. Any ideas? Thanks, -Mark

[bendgoatracer]

There is a relay on the firewall behind the distributor with a 4 wire plug,most likely it is bad!Check the ground on the relay also,make sure it is metal to metal at the screws ,that will also not let high work,hope that helps!

[VAUGHN68]

Is that the Master A/C relay(red/ black wire on left) or the regulator? I have the A/C relay even and just left of the dist. but the regulator is missing above the dist on the firewall (3 empty screw holes). -Mark

[bendgoatracer]

My bad,it is a three wire plug 2 black with yellow stripes(12 guage wire)and one light gray(16 guage wire)it is mounted 1 inch to the left and 2 inchs down from the regulator,two screws hold it on.