electrical problem on engine swap
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Joined: Sep 2009
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From: Pulaski Tn
electrical problem on engine swap
I am having a weird electrical problem. I am a novice so please bare with me. The truck is a 1983 f150 4x4. I removed the original 351w and replaced with a 1986 351w HO. Everything seemed to go pretty well. However, when I went to hook up the positive side of the battery it smoked the starter solenoid. So, I thought maybe ground wasn't tight so I tightened. Changed the starter wire to the starter solenoid and changed the solenoid. Still same problem. When I disconnect the wires at the alternator it doesn't spark at the battery. I am not exactly sure how the wiring to the alternator goes but I wouldn't think it would cause such a spark from the battery. I used the alternator that was already on the original 351w which is a back terminal alternator and only has two wires. One appears to be the ground and the other is orange/red. I am a little nervous about this problem because of the sparking and really don't understand how it could be happening .. I have never experienced this sort of problem before. What could possible be wrong ? Bad alternator ? Miswired somehow/somewhere ?? Any help would be greatly appreciated..
