mine had all the wires underneath the dash and plugged right in. i have an 87 pickup and i got mine from an 87 4Runner.

i think this picture looks sweet so im gonna post it for you haha.
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87 22R PU, 2? body lift, 33? BFG muds, 4.88's, F&R Lock-Rights, Rancho Shocks, EB's Street RV Head w/ 268 Cam, LCE Header, 2" to 2 1/4" exhaust, Flowmaster 50 series, Magnaflow high flow cat, complete Herculined SR5 interior, V6 BB, MC, and calipers.