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Electrical issue


73igShoT
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So I was driving home from work about a month ago when my car died. Lights and clocked worked but no gauges or radio and starter wouldn't even click. 5 minutes later started right up didn't even touch anything. everything continued to run fine for a few weeks so I thought it was a fluke. So I took her for a drive 2 weeks later and as I was going the radio was cutting on and off. while it was doing that all lights on the cluster were on. I checked all fusible links, theyre fine. I cleaned the battery terminals and ground and went to oreillys. when I was done there it wouldn't start. once again I let it sit a min and it started right up. any ideas???

 

its an 87 conquest

double din radio

cold air intake

straight pipe to resonator

secondary air delete

68xxx miles

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FSM. you can download a copy from this site. Go to the elect section and they show pics of where all the grounding points are.

Think the manuals are in one the newbie sections

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I had all kinds of problems with the wiring harness around the battery leading to the relays and fusible links. Many members here will gesture you to remove, clean, and check the connections on all your fusible links. These are the plug-in wire 'loops' next to the battery on the driver side inner fender. Be aware that there are some hiding behind the removable metal panel.

 

In addition to this, my problem lay in the wiring harness junction connectors in this same area. Some had such a poor connection that the plastic connectors were melted from the heat. In my case, since I had no intention of unplugging these ever, or removing the harness form the car, I hard-soldered all of the appropriate wires together with a high wattage iron after clipping off the offending connectors. These connectors were tucked down between teh battery tray and inner fender. Jabbing around in that area with a probe would, for me, temporarily solve my electrical issues.

 

Also, grounds are extremely important. Your negative battery cable jumps from the battery, to the body beneath the battery tray, to the engine block. That connection at the body is prone to corrosion as well. Check it.

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