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1986 Chevy Silverado C-10 Fusible Links

  
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1986 Chevy Silverado C-10 Fusible Links

 
Southampton Southampton
New User | Posts: 1 | Joined: 09/13
Posted: 09/20/13
09:44 AM

Hi.. Purchased an 1986 C-10 Silverado with AT and ~ 32K miles about 4 months ago.  Also managed to find a good used complete set of factory workshop manuals.  Trying to identify the location, number and wire gauge of fusible links. Searching near the starter identifies a number of wires that appear to be fusible links, but I am not certain. Do fusible links appear just as regular wires ? Are there connections at each end to allow easy replacement if blown ?  When blown, does the exterior of the wire burn/discolor ? Do they have anything else attached to them to identify the item as a fusible link ?  Thanks  

waynep712222 waynep712222
User | Posts: 209 | Joined: 03/13
Posted: 09/20/13
09:55 PM

fusible links on a GM truck...

hmm... usually have the wire circuit they are protecting.. a big round plastic block and then a thinner wire to the ring terminal..

take a look at my additions on this 77 to 80 diagram..

77 80 Chevytruck Fusible Links

pay attention to the sizes in the upper left..

i don't have any of my printed manuals out.. i don't recall exactly where the fusible links are other than the starter and the firewall off the twin stud distribution block...  

waynep712222 waynep712222
User | Posts: 209 | Joined: 03/13
Posted: 09/20/13
09:57 PM

again. this image is for the 77 to 80.. it should be similar to your 86..


if you note on the diagram above..

there are 2 fusible links coming off the starter motor..

one that feeds the terminal block and the back of the alternator..

the other one feeds the sense terminal on the side of the alternator..

both of these feed into the cab of the truck.. this allows the amp meter to work..

print the image above.. follow the individual circuits.. sorry i don't have the inside up and ready...

if you can scan yours.. and upload them to someplace like photobucket.. i can add some notes to it..

or take pictures..

a hint.  when i used to work on a lot of catering trucks..

i had a 3/8 or 10MM ring terminal.. a chunk of 10 gauge wire..  a european style terminal block  a section of the proper sized fusible link.. another european style terminal block..

this allowed me to get under the truck.. remove the top nut from the solenoid.. drop this prefab unit in..  chop off the burned fusible link.. use the european style terminal block to easily reconnect the power circuits back in..

and why i used the european terminal blocks.. this allowed me to get in with a screw driver at a later time to swap the fusable link out in under 2 minutes instead of about 10 or 12..  get the truck rolling again.. these always had massive batteries in the back.. and when something would get rattled across those.. it would burn the fusable link..  leaving the truck stranded.. i only did quick repairs there.. i was not allowed to rewire the trucks so they did not fail out on the road..