Painless Performance 21-circuit universal harnesses cover most basic wiring needs. GM column mounted harnesses include ignition switch plugs and turn signal switch plugs, preterminated and ready to install. They also have pre-wired plugs for the headlights and dimmer switch. The dash mounted units do not include the GM column mounted ignition switch plugs, but do include the GM column mounted turn signal switch plugs and terminals. They are not intended for vehicles with additional electrical accessories, such as power windows, door locks, etc.
| Type | 21 Circuit |
| WARNING CA Proposition 65 | Yes |
| WARNING CA Proposition 65 Message | WARNING: This product can expose you to Lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. |
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