couple points, timers are in back of auto swing module 8second timer, we have had a lot of trouble with 105amp delco alt. rebuilder puts in temperature sensing regulator that shuts down instead of burning up alternator. we now have a DIRECT bolt on 130amp with same mounting that has sure cured the alt problem, later combines have 130amp already on them but mount different. also solenoid in counsol can have a bad internal connection and not supply proper voltage to cab, put a jumper wire across 2 largest terminals and if you get a spark or voltage raises it is bad,sometimes turning ignition switch on off will give it a better connection if it is going bad.