You give it a good 12-volt supply from a bus bar and run a 10-gauge. It’s not going to carry the main cable amperage, just the 40-amp signal. The standard type of wiring scheme we recommend uses a Ford-type relay to carry just the activation side. Im thinking that 62 could be had with a generator or an alternator. This wiring scheme is how Meziere suggests customers wire their starter to avoid any issues. I would think that any normal wiring diagram would be the same. Does not seem to lead to the CSS or starter relay. NOTE: The above ignition switch circuit wiring diagram applies to the following vehicles: Chevrolet: 4.8L Chevrolet Silverado (1500, 2500): 2000 5.3L Chevrolet Silverado (1500, 2500): 2000 6. Just remember that the 62 Impala came from the factory with a generator and not an alternator so the wiring may be different. This wire joins up with the 4mm red coming from the solenoid and travels along the firewall back into the ****pit. I also explain how to bypass the solenoid if needed. I'm assuming the taped off black wire in the engine bay is supposed to connect to the other spade on the solenoid (?). In this video I show how to wire a starter relay, starter solenoid, and neutral safety switch on an engine. The yellow/cream colored wire which according to the wiring diagram is supposed to be black and either return to CSS or the starter relay, heads back inside and joins with a black wire, which ends at the ignition switch. I tried to start with the solenoid and retrace the wire path but ended up deeper in the woods. My electrical ignition switch is failing and the cheapest I found a replacement. For starters, the working setups of several members' 74s do not match the wire color diagrams available, so I'm not sure which to follow. Im new to the site somewhat new at mechanics. I've scoured the forums for common setups and together with papajam's diagram for my '74 I'm more perplexed than before. As of now, with the red wire connected per the diagram, the ignition is hot without the key, and the engine cranks if I engage the battery. Now I'm having issues getting the wiring down. Two pre-wired GM column ignition switch plugs One pre-wired dimmer switch plug Two GM turn signal connectors for the pre-terminated wires (3-7/8' and 4-1/4') One fusible link (3'black wire with ring terminal) One large grommet 24 miscellaneous insulated terminals and some small cable ties 2 loose wires (neutral safety switch wire and panel. It appears the PO did some bypassing on an old defective switch so I purchased a new one. Our 1972 Chevrolet Blazer had some intermittent ignition problems, so we called in Dave Welch, the expert in Classic Trucks to help us sort it out.
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