299.99 GM 86-89 TPI Mass Air For use with TPI systems using a MAF ... sensor or Mass Air Flow System on GM 5.0L and 5.7L V8s. ... 325.99 GM 90-92 TPI with speed density For use with TPI ... systems using a MAP sensor or Speed Density System on GM 5.0L and ... why their low beams go off when the high beams are turned on, no good reason we ... by keeping all four lights on when in high beam mode. 30802 88-98 GM fullsize ... some vehicles such as 88-91 Suburbans. High Beam Headlight Relay Now you can ... Kit you dont need the computer or speed sensor. A vacuum controlled 4th gear pressure ... pump. All pre-printed, color-coded, high-temperature TXL wire 20121 ... . Includes standard circuits such as air conditioning/heat, gauges/dash ... and labeled for the following circuits: Air conditioning /heat, gauges/dash ...