electrical problems

if i use my turn signals there is a big drain in my cars power, and i mean . my speedo jumps up about 10 mph whenever the light comes on, then jumps back down when the light goes off, also if i have my radio and headlights on it drains really bad too. also the same problem happens when i have my wippers on. i have changed my Alternator about 3 months ago and the problem went away and my battery is 6 months old. anybody got any ideas???

You need to check for pinched or chafed wiring in the dash and steering column, and make sure that all your dashboard and chassis grounds are intact.

Actually, since you said the wipers do it too, I suspect there is a short in the turnsignal/wiper control switch, since they are on the same stalk, right?

You will have to pull the streering wheel and have a look down in the column if the wiring coming out the bottom of the column is not botched up. If the wiring is all OK, then a new multi-switch should fix it.

Jeff is correct on the multifunction switch being your problem. IT's a common issue, especially if you have a newer Lumina with the combination switch.