KAH

• My 1997 F -150 with the 4.6 V8 has the towing package.

This truck must have 20 relays in the various electrical
circuits. It appears that there are only two different styles of
relays.

Are these relays a solid state device or do they actually
have moving parts like the old time relays did ?

I have never had any reason to want to test one to see
if it was defective but I would like to know if there are any specifications
such as coil resistance and contact resistance.

Thanks,

Ken H.