Parasitic drain issue.

I am at my wits end. There is something drawing juice from my batteries on a 2007 freightliner M2. I have pulled each fuse 1 at a time and sparks still fly when reconnecting negative cables. I did the same with all the relays behind dashboard. When I jumped truck to get started all lights started flashing including 1 headlight. Could not get any of them to turn off. Trying to find fuse for emergency lights. Would the solenoid or IMS on the starter be drawing juice if faulty? There is only 3000 hours on this truck. It has a heavy machine mounted on back and has never been above 25 m.p.h. Last time I had mechanic out here, it cost 1000 for his 1.5 hours to tell me what I already knew.

 

I am having nothing but corrosion problems with the whole fleet. There is no salt allowed here, so I don't understand it. I have changed so many bulbs AND SOCKETS due to melting on the front turn signals on every truck we have. I will do what you say and get back later in the day. Thank you so much!

 

Yeah I already bought every package of bulb grease they had in anticipation of this. I couldn't believe fuse did't trip. I don't have an ampmeter yet, but I used my powerprobe and it shows a draw of 7.8 volts! The ohmeter showed a negative couldn't get a reading. Alternator good. Another problem we are having with all these trucks is the wiring is coming up too short over time and things are getting pulled out by themselves. 4 heaters last winter alone. You would think Mercedes and freightliner would spend a nickel for 1 more inch. Recalled trucks due to PLASTIC fuel lines. Thank God for on-the-job-training. Going back out there and removing all the grounds and cleaning and greasing them then I will do the volt drop test. Thanx a million.

 

yes there are 3 I only checked the easy ones. One was burnt. Now I will check the rest. I pulled starter and am in process of getting it tested. It wouldn't turn on when I hooked to battery in van. Just for ##### and giggles I reattached negative cable to battery and I still got a spark and 7.8 volts drain.AAAARGH. This was with starter out and door closed. I don't think there is low-battery thingamagig.

 

Do you mean check negative wires for volts, or positive wires being grounded?