Dee.

Ok thank you and the harness is pretty bad where it runs under the floor and above the steer tire lots of broken rotten wires so it’s difficult to be sure where some even went and I also can’t get the harness un hooked to reconnect a couple that broke up tight to the connection 

On 2/7/2018 at 8:05 PM, TimberJack said:

Can you start the truck by jumping it on the starter? 

I hope you already solved your problem but you definitely can that’s how we got ours going first then replaced some wires and can do it off the silinoid in the junction box still trying to get cab power at all and start from key 

On 2/21/2020 at 2:33 PM, Vladislav said:

Used ATF also works fine in a leaky cab hoist

Good to know thanks no more 6dollars a bottle jack oil 

Thank you one side had a leak so it was not fully unlocking 

On 11/25/2015 at 4:51 PM, 68-f-model said:

For $1800 it better install itself . I put a modern blade type fuse block and full harness in for about $175 .

Hi I am new to old Mack’s currently trying to resurrect a 1987 mh600/613 cab over with my dad  with a wiring nightmare we have been replacing single wires and got as far as we can start it from the junction box for lack of better terms but can’t get any power to the cab at all or the ignition how did you replace the harness for under $200? Also how do you know what wire goes to what as they are not really color coated? And and all help or tips would be really appreciated thanks in advance D.

Hi new to old Mack’s and cab overs how to open the cab?? Pump the jack it gets stiff but don’t move where’s the safety latch is their one??

hi just starting to get into an mh613 could someone tell me how to open the cab I pump the jack it gets stiff but doesn’t raise the cab is their a safety latch I’m over looking??